Lg Electronics Inc.

Sechang Myung

Seonwook Kim

Suckchel Yang

Joonkui Ahn

Changhwan Park

Seokmin Shin

Duckhyun Bae

Hyunho Lee

Youngdae Lee

Hanjun Park

Jiwon Kang

The present disclosure provides a method for transmitting an uplink signal by a terminal in a wireless communication system. In particular, the method may comprise: performing a first listen-before-talk (LBT) on the basis of a specific beam; on the basis of the failure of the first LBT, performing a second LBT on the basis of a beam group including the specific beam; and transmitting the uplink signal on the basis of the success of the second LBT, wherein a first energy detection (ED) threshold value for the first LBT is less than or equal to a second ED threshold value for the second LBT.

Method for performing channel access procedure and apparatus therefor

According to an embodiment of the present disclosure, a user equipment (UE) may perform a channel access procedure for a scheduled uplink (UL) transmission on a shared spectrum based on a random access response. When it is indicated that the scheduled UL transmission is associated with channel occupancy initiated by a base station (BS) and the UE needs to perform channel sensing for the scheduled UL transmission, the UE may perform the channel access procedure for the scheduled UL transmission, based on whether reception of the random access response and the scheduled UL transmission are confined within a same period among periods configured in the shared spectrum.

Method and apparatus for transmitting and receiving signal in wireless communication system

A method of transmitting a PUCCH by a UE in a wireless communication system is provided. The method includes receiving (i) first information related to an uplink (UL) bandwidth part (BWP), (ii) second information related to the number of resource blocks (RBs) for the PUCCH, and (iii) third information related to an index of one initial PUCCH resource set among a plurality of initial PUCCH resource sets, determining whether the one initial PUCCH resource set is valid based on at least of the size of the UL BWP and the number of the RBs, and transmitting the PUCCH through a PUCCH resource included in the one initial PUCCH resource set based on the one initial PUCCH resource set being valid.

Method of transmitting and receiving uplink control channel and apparatus therefor

According to an embodiment of the present disclosure, a user equipment (UE) may receive downlink control information (DCI) in a first fixed frame period (FFP) for frame based equipment (FBE) from a base station (BS), and perform a channel access procedure for a scheduled uplink (UL) transmission based on the DCI. In a first state in which it is indicated that the scheduled UL transmission is related to channel occupancy initiated by the BS, and the UE should perform channel sensing for the scheduled UL transmission, the UE may perform the channel access procedure for the scheduled UL transmission based on whether a resource for the scheduled UL transmission allocated by the DCI is confined within the first FFP in which the DCI is received.

The present invention relates to a wireless communication system, specifically, to a method and an apparatus therefor, the method comprising: receiving BWP switching information from a first BWP; switching from the first BWP to a second BWP on the basis of the BWP switching information; switching to a third BWP different from the second BWP on the basis of transmission failure of a first uplink from the second BWP; and transmitting a second uplink from the third BWP, wherein the third BWP is one from among the first BWP, an initially activated BWP used for initial access, and a previously configured BWP.

Method for transmitting and receiving signal in wireless communication system and apparatus supporting same

The present invention relates to a method for transmitting a Physical Uplink Shared Channel (PUSCH), performed by a user equipment (UE) in an unlicensed band, the method comprising: receiving downlink control information (DCI) including information on a listen before talk (LBT) type and information on a PUSCH start position from a base station; and transmitting the PUSCH on the basis of the information on the LBT type and the information on the PUSCH start position, wherein the LBT type is one of LBT type 1, LBT type 2, and LBT type 3, a random backoff-based LBT is performed in the LBT type 1, an LBT without a random backoff is performed in the LBT type 2, and an uplink is transmitted without LBT in LBT type 3.

Uplink transmission method in unlicensed band in wireless communication system and terminal using same method

Disclosed is a method of performing an uplink (UL) transmission by a user equipment (UE) in a wireless communication system. Specifically, the method comprises performing sensing on a plurality of beams, wherein each of the plurality of beams is sensed independently; performing the UL transmission through at least one beam sensed to be idle among the plurality of beams, wherein counter values for the each of the plurality of beams are set independently.

Method of transmitting and receiving signal in unlicensed band and apparatus therefor

A method by which a terminal transmits an uplink signal in an unlicensed band, and an apparatus using same are provided. The method receives, from a base station, channel occupancy information through a PDCCH and transmits the uplink signal to the base station through a configured grant uplink access (CUL) type physical uplink shared channel (PUSCH) on the basis of the channel occupancy information. The channel occupancy information indicates which sub-band of a CUL band including a plurality of sub-bands enables the terminal to transmit the CUL type PUSCH within a channel occupancy time (COT) acquired by the base station through a channel access procedure.

Method by which terminal transmits uplink signal in unlicensed band, and apparatus using method

Disclosed is a method of transmitting an uplink signal by a user equipment in a wireless communication system. The method includes receiving first information related to an uplink (UL) transmission beam, determining a listen-before-talk (LBT) beam based on the first information, and transmitting the uplink signal through the UL transmission beam based on success of LBT based on the LBT beam.

Method of performing channel access procedure and apparatus therefor

A method of a user equipment (UE) in a wireless communication system includes receiving resource allocation information related to a configured grant (CG)-based uplink transmission, receiving configuration information indicating multiplexing between CG uplink control information (CG UCI) and hybrid automatic repeat request acknowledgement (HARQ-ACK) information, performing joint encoding of the CG UCI and the HARQ-ACK information based on the configuration information, and transmitting a CG physical uplink shared channel (CG PUSCH) based on the resource allocation information. The joint-encoded information is multiplexed in the CG PUSCH. A beta offset value corresponding to one of a first index, a second index, or a third index related to a beta offset for the HARQ-ACK information is applied to the joint encoding.

The present invention relates to a wireless communication system, more specifically to a method and an apparatus therefor, the method comprising switching an active bandwidth part (BWP) on the basis of BWP switching indication information, and transmitting an uplink on the basis of the results of a channel access procedure (CAP) in the switched active BWP, wherein the active BWP comprises N number of frequency units in which the CAP is carried out, N being an integer two or greater, and the uplink is transmitted in a resource determined on the basis of whether the CAP is successful in all or a part of the N number of unit frequencies.

Various embodiments of the present disclosure disclose a method for transmitting and receiving a signal in a wireless communication system and an apparatus supporting the same.

Method for transmitting and receiving signal in wireless communication system, and device supporting same

Provided are a method for accessing a channel in an unlicensed band and a device using same method. The method is configured such that a wireless device transmits data units, receives feedback information about the data units, and adjusts a contention window size used in a determination of whether there is an access to the channel in the unlicensed band on the basis of the feedback information. The wireless device can adjust the contention window size by using feedback information about, from among the data units, data units which at least partially overlap in reference duration.

Method for terminal to access channel in unlicensed band and device using same method

A method and device for transmitting and receiving signals in a wireless communication system according to one embodiment of the present invention perform a 2-step or 4-step random access process in a shared spectrum. For the transmission of a PUSCH corresponding to an RAR in the 4-step random access process or a fallback-RAR in the 2-step random access process, the channel access type for the PUSCH is determined on the basis of a specific field of an RAR grant in the RAR.

Method and device for transmitting and receiving signals in wireless communication system

The present disclosure relates to a method and a device therefor, the method comprising the steps of: obtaining, on the basis of not receiving information on a channel occupancy duration from a base station, channel state information based on a plurality of CSI-reference signals (CSI-RSs) which are all overlapped with, on a time domain, at least one from among a physical downlink shared channel (PDSCH) and an aperiodic CSI-RS; and transmitting the channel state information to the base station, wherein durations corresponding to the PDSCH and the aperiodic CSI-RS are consecutive time durations on the time domain.

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Seoul, South Korea

Sechang Myung