US-12628199-B2 - Method and apparatus for transmitting and receiving signal in wireless communication system

US12628199B2US 12628199 B2US12628199 B2US 12628199B2US-12628199-B2

Abstract

The present disclosure discloses a method of a user equipment (UE) in a wireless communication system. Especially, the method comprising: receiving system information; performing a channel access procedure (CAP) based on one of a first channel access mode and a second channel access mode different from the first channel access mode; and transmitting an uplink signal based on a result of the CAP, and wherein, based on the system information including information related to a channel access mode, the CAP is performed based on one of the first channel access mode and the second channel access mode based on the information, and wherein, based on the system information not including the information related to the channel access mode, the CAP is performed based on the first channel access mode.

Inventors

Sechang MYUNG
Seonwook Kim
Suckchel YANG

Assignees

LG ELECTRONICS INC.

Dates

Publication Date: 20260512
Application Date: 20230829
Priority Date: 20190926

Claims (7)

1 . A method comprising: determining, by a user equipment (UE), whether an uplink (UL) transmission is associated with a channel occupancy that is initiated by a base station (BS) or the UE, wherein the UE determines the channel occupancy is initiated by the BS based on a DL transmission from the BS being detected in a first period, and wherein the UE determines the channel occupancy is initiated by the UE based on the DL transmission not being detected in the first period, and wherein the first period is a duration for the BS including a first channel occupancy time and a first idle duration; based on a determination that the channel occupancy is initiated by the BS in the first period, performing the UL transmission to the BS after the DL transmission in the first period, wherein the UL transmission ends before start of the first idle duration; and based on a determination that the channel occupancy is initiated by the UE, performing the UL transmission to the BS in a second period based on that the first period is not occupied by the BS, wherein the second period is a duration for the UE including a second channel occupancy time and a second idle duration, and the UL transmission ends before start of the second idle duration.
2 . The method according to claim 1 , wherein the UL transmission is performed in an unlicensed band.
3 . A user equipment (UE) comprising: at least one transceiver; at least one processor; and at least one computer memory operatively coupled to the at least one transceiver and the at least one processor and configured to store instructions for enabling the at least one transceiver and the at least one processor to perform operations comprising: determining whether an uplink (UL) transmission is associated with a channel occupancy that is initiated by a base station (BS) or the UE, wherein the UE determines the channel occupancy is initiated by the BS based on a DL transmission from the BS being detected in a first period, and wherein the UE determines the channel occupancy is initiated by the UE based on the DL transmission not being detected in the first period, and wherein the first period is a duration for the BS including a first channel occupancy time and a first idle duration; based on a determination that the channel occupancy is initiated by the BS in the first period, performing the UL transmission to the BS after the DL transmission in the first period, wherein the UL transmission ends before start of the first idle duration; and based on a determination that the channel occupancy is initiated by the UE, performing the UL transmission to the BS in a second period based on that the first period is not occupied by the BS, wherein the second period is a duration for the UE including a second channel occupancy time and a second idle duration, and the UL transmission ends before start of the second idle duration.
4 . The UE according to claim 3 , wherein the UL transmission is performed in an unlicensed band.
5 . The UE according to claim 3 , wherein the UE includes an autonomous driving vehicle communicable with at least one of a network or another autonomous driving vehicle other than the UE.
6 . A non-transitory computer-readable storage medium storing instructions executed by at least one processor of a user equipment (UE) to perform operations, wherein the operations comprise: determining whether an uplink (UL) transmission is associated with a channel occupancy that is initiated by a base station (BS) or the UE, wherein the UE determines the channel occupancy is initiated by the BS based on a DL transmission from the BS being detected in a first period, and wherein the UE determines the channel occupancy is initiated by the UE based on the DL transmission not being detected in the first period, and wherein the first period is a duration for the BS including a first channel occupancy time and a first idle duration; based on a determination that the channel occupancy is initiated by the BS in the first period, performing the UL transmission to the BS after the DL transmission in the first period, wherein the UL transmission ends before start of the first idle duration; and based on a determination that the channel occupancy is initiated by the UE, performing the UL transmission to the BS in a second period based on that the first period is not occupied by the BS, wherein the second period is a duration for the UE including a second channel occupancy time and a second idle duration, and the UL transmission ends before start of the second idle duration.
7 . The non-transitory computer-readable storage medium according to claim 6 , wherein the UL transmission is performed in an unlicensed band.

Description

This application is a continuation of U.S. patent application Ser. No. 17/032,127 filed on Sep. 25, 2020, which claims the benefit of and priority to U.S. Provisional Application No. 62/911,114 filed on Oct. 4, 2019, Korean Patent Application No. 10-2019-0119157 filed on Sep. 26, 2019 and Korean Patent Application No. 10-2019-0141904 filed on Nov. 7, 2019, the contents of which are all hereby incorporated by reference herein in their entirety. TECHNICAL FIELD The present disclosure relates to a method and apparatus for transmitting and receiving a signal in a wireless communication system. BACKGROUND ART Wireless access systems have been widely deployed to provide various types of communication services such as voice or data. In general, a wireless access system is a multiple access system that supports communication of multiple users by sharing available system resources (a bandwidth, transmission power, etc.) among them. For example, multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, and a single carrier frequency division multiple access (SC-FDMA) system. DISCLOSURE Technical Problem Provided are a method and apparatus for efficiently performing a wireless signal transmission and reception procedure. It will be appreciated by persons skilled in the art that the objects that could be achieved with the present disclosure are not limited to what has been particularly described hereinabove and the above and other objects that the present disclosure could achieve will be more clearly understood from the following detailed description. Technical Solution In one aspect of the present disclosure, a method of a user equipment (UE) in a wireless communication system includes receiving system information, acquiring a channel access mode based on the system information, performing a channel access procedure (CAP) based on the channel access mode, and transmitting an uplink signal based on a result of the CAP. The channel access mode includes a first mode and a second mode, a CAP type of the first mode is difference from a CAP type of the second mode, and the acquired channel access mode is i) a channel access mode indicated by the system information between the first mode and the second mode based on the system information including information about the channel access mode, or ii) the first mode based on the system information not including the information about the channel access mode. In another aspect of the present disclosure, a UE in a wireless communication system includes at least one transceiver, at least one processor, and at least one computer memory operatively coupled to the at least one transceiver and at least one processor and, when executed, causing the at least one transceiver and at least one processor to perform operations. The operations include receiving system information, acquiring a channel access mode based on the system information, performing a CAP based on the channel access mode, and transmitting an uplink signal based on a result of the CAP. The channel access mode includes a first mode and a second mode, a CAP type of the first mode is difference from a CAP type of the second mode, and the acquired channel access mode is i) a channel access mode indicated by the system information between the first mode and the second mode based on the system information including information about the channel access mode, or ii) the first mode based on the system information not including the information about the channel access mode. In another aspect of the present disclosure, an apparatus for a UE includes at least one processor, and at least one computer memory operatively coupled to the at least one processor and, when executed, causing the at least one processor to perform operations. The operations include receiving system information, acquiring a channel access mode based on the system information, performing a CAP based on the channel access mode, and transmitting an uplink signal based on a result of the CAP. The channel access mode includes a first mode and a second mode, a CAP type of the first mode is difference from a CAP type of the second mode, and the acquired channel access mode is i) a channel access mode indicated by the system information between the first mode and the second mode based on the system information including information about the channel access mode, or ii) the first mode based on the system information not including the information about the channel access mode. In another aspect of the present disclosure, a processor-readable medium stores one or more instructions which, when executed, cause at least one processor to perform operations. The operations include receiving system information, acquiring a channel access mode based on the system information, performing a CAP based