Lg Electronics Inc.

Seokmin Shin

Joonkui Ahn

Suckchel Yang

Changhwan Park

Seunggye Hwang

Seonwook Kim

Hyunsoo Ko

Jaehyung Kim

Yunjung Yi

Kijun Kim

Bonghoe Kim

Sukhyon Yoon

Sechang Myung

Hanjun Park

Byounghoon Kim

Jeongsu Lee

Youngdae Lee

Daesung Hwang

Hyungtae Kim

Haewook Park

Hanbyul Seo

Inkwon Seo

Hyangsun You

Kunil Yum

Oanyong Lee

Seungmin Lee

Hyukjin Chae

Eunsun Kim

Sunghoon Lee

Chang Hwan Park

Methods and apparatuses for performing communication in a wireless communication system. A user equipment (UE) receives first satellite ephemeris information related to a first satellite and information related to a first validity duration corresponding to the first satellite from a base station; and restarts a first validity timer, based on second satellite ephemeris information related to the first satellite being received from the base station while the first validity timer having the first validity duration is running. The UE obtains a first TA for the first satellite based on the first satellite ephemeris information before the first validity timer restarts, expires, or stops after starting based on the first validity duration, and the UE obtains a second TA for the first satellite based on the second satellite ephemeris information before the first validity timer expires or stops after restarting based on a second validity duration.

Method and apparatus for performing communication in wireless communication system

A base station according to an embodiment of the present invention may determine multiple different RA-RNTIs, and transmit message 2 for a random access response on the basis that: the base station supports not only a random access procedure of a first type terminal having a first maximum terminal bandwidth, but also a random access procedure of a second type terminal having a second maximum terminal bandwidth smaller than the first maximum terminal bandwidth; message 1 including a PRACH preamble has been detected on a PRACH resource shared between the first type terminal and the second type terminal; and at least one of PRACH preamble sequences for the first type terminal is reused for the second type terminal.

Method for transmitting or receiving signal for wireless communication, and device therefor

According to an embodiment of the present disclosure, a method for transmitting, by a user equipment (UE), uplink data in a wireless communication system supporting a narrowband Internet of things (NB-IoT) system includes: receiving information related to a preconfigured uplink (UL) resource (PUR) for transmitting the uplink data in an RRC connected state; and transmitting the uplink data by using the preconfigured uplink resource (PUR) in an RRC idle state. In the transmitting of the uplink data, when the preconfigured UL resource (PUR) is a dedicated resource and there is no data to be transmitted in the preconfigured UL resource (PUR), transmission of the uplink data is skipped.

Method for transmitting uplink data in wireless communication system supporting narrowband internet of things, and apparatus therefor

The present invention relates to a wireless communication system, specifically to a method and an apparatus therefore, the method comprising the steps of: receiving resource allocation (RA) information for transmitting a PUSCH in a frequency band, the frequency band comprising a plurality of sub-bands (SB), each SB comprising a plurality of consecutive RBs, a guard band (GB) being provided between the plurality of SBs, and the RA information indicating one or more non-consecutive SB indexes; and transmitting the PUSCH in an RB interlace in the frequency band on the basis of the RA information.

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

Disclosed are a method and an apparatus for transmitting an uplink signal by a terminal in a wireless communication system supporting a non-terrestrial network (NTN) according to various embodiments. The method includes receiving system information for configuring a first K offset, receiving a control signal for configuring or updating a second K offset based on the first K offset, and transmitting the uplink signal based on the first K offset or the second K offset, wherein, based on the uplink signal being related to a random access channel (RACH), the uplink signal is transmitted based on the first K offset.

Method for transmitting uplink signal by terminal in wireless communication system, and apparatus therefor

The present invention relates to a method for performing a random access procedure in a wireless communication system and an apparatus therefor, the method comprising the steps of: receiving a physical downlink control channel (PDCCH) order, which indicates initiation of a random access procedure, from a base station; transmitting a random access preamble to the base station; and receiving a random access response message from the base station, wherein the step of receiving the random access response message comprises receiving downlink data together with the random access response message when the PDCCH order indicates downlink data transmission in Msg2.

Method for performing random access procedure and apparatus therefor

The present specification relates to a method for performing preconfigured uplink resource (PUR) transmission using a PUR in a wireless communication system, wherein the method performed by a terminal comprises the steps of: receiving, from a base station, PUR configuration information for the PUR transmission in an RRC connected state; and performing the PUR transmission to the base station in an RRC idle state on the basis of the PUR configuration information, the PUR configuration information comprising channel information for transmitting an ACK or NACK regarding downlink feedback.

Method for performing uplink transmission using preconfigured resource in wireless communication system, and apparatus therefor

A method and apparatus for transmitting or receiving a signal in a wireless communication system according to an embodiment of the present invention may comprise: transmitting message A including a physical random access channel (PRACH) and a physical uplink shared channel (PUSCH); and receiving message B on the basis of message A, wherein random access channel occasions (ROs) for transmission of the PRACH are located in a first slot, PUSCH occasions (POs) for transmission of the PUSCH are located in a second slot, and the first slot and the second slot are time-division multiplexed (TDMed) with each other.

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

A method and a device for transmitting/receiving a signal in a wireless communication system, according to one embodiment of the present invention, perform a two-step or four-step random access procedure, and monitor a PDCCH according to a DRX configuration, wherein the PRACH transmitted in the random access procedure is transmitted on a specific RO from among a plurality of ROs, and a starting RB index of the specific RO can be determined on the basis of (i) the lowest RB index of an RB set including the specific RO, (ii) the starting RB index of an RO positioned at the lowest frequency, and (iii) the lowest RB index of an RB set including the RO positioned at the lowest frequency.

Method and device for transmitting signal based on determination of starting RB index of RO in wireless communication system

A method and device for transmitting and receiving signals in a wireless communication system, according to one embodiment of the present invention, comprise: repetitively mapping a PUCCH sequence to each of resource blocks (RB) in an interlace; and transmitting the PUCCH on the interlace, wherein the number of RBs constituting the interlace may be a prime number.

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

The present disclosure provides a method for receiving a downlink signal on the basis of a random-access channel procedure (RACH procedure) by a terminal in an unlicensed band. Specifically, the method may comprise: on the basis of a power ramping counter, configuring transmission power for message A including a first physical random-access channel (PRACH) and a first physical uplink shared channel (PUSCH); on the basis of the transmission power, transmitting message A to a base station; and receiving contention resolution-related message B from the base station in response to message A, wherein an increase is made on the basis that a transmission spatial beam for transmission of message A is configured to be identical to a transmission spatial beam related to transmission of a PRACH preceding message A.

Method for receiving downlink signal on basis of random-access channel procedure in unlicensed band, and device therefor

In a method and a device for transmitting and receiving signals in a wireless communication system according to an embodiment of the present invention, N control resource set #0s (CORESET #0s) are received on the basis of first subcarrier spacing (SCS), and N synchronization signal blocks (SSBs) are received on the basis of second SCS. The SSBs are continuously located in the time domain. The CORESET #0s are located in a slot to which a most advanced SSB in the time domain from among the SSBs belongs, and are continuously located from symbol #0 within the slot.

A method and a device for transmitting and receiving a signal in a wireless communication system, according to one embodiment of the present invention, comprise: receiving downlink control information (DCI) for scheduling a physical uplink shared channel (PUSCH); and transmitting the PUSCH on the basis of the DCI. The PUSCH is transmitted in a certain number of resource blocks (RB), and the certain number of RBs may be (i) at most the number of RBs allocated by the DCI, and (ii) the greatest number that is a multiple of 2, 3, and/or 5.

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

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.

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.

Growing community of inventors

Seoul, South Korea

Seokmin Shin