Abstract: Proposed is a method for transmitting a physical random access channel (PRACH) preamble in a wireless communication system. Specifically, a method performed by user equipment (UE) comprises the steps of: receiving, from a base station, setting information including a first power ramping step for a two-step random access channel (RACH) and a second power ramping step for a four-step RACH; transmitting, to the base station, information including a first preamble and a physical uplink shared channel (PUSCH) for a two-step RACH on the basis of the first power ramping step; and transmitting, to the base station, a second preamble for a four-step RACH by using the second power ramping step, on the basis of the number of retransmissions of the information exceeding a maximum number of retransmissions associated with a preset two-step RACH.

Abstract: A method of transmitting, by a transmitting device, an orthogonal frequency division multiplexing (OFDM) signal in a wireless communication system, the method including: generating, by a digital module of the transmitting device, a frequency-shifted OFDM baseband signal by performing frequency up-shift of a first signal by a difference between a carrier frequency f0 and a first frequency fbase, wherein the first frequency fbase is among frequencies corresponding to integer multiples of 128?f closest to the carrier frequency f0, and wherein ?f is an OFDM subcarrier spacing; up-converting, by an analog oscillator of the transmitting device, the frequency-shifted OFDM baseband signal by the first frequency fbase to generate an OFDM symbol signal at the carrier frequency f0; and transmitting the OFDM symbol signal at the carrier frequency f0.

Abstract: The present invention provides a method for transmitting and receiving a downlink signal between a terminal and a base station in a wireless communication system supporting an unlicensed band, and a device supporting the method. As a specific example, the present invention includes a method for: transmitting and receiving a physical downlink control channel (PDCCH) signal in an unlicensed band so that a base station and a terminal transmit and receive system information associated with a particular synchronization signal/physical broadcast channel (SS/PBCH) block; and, based on the PDCCH signal, transmitting and receiving a PDSCH signal including the system information.

Abstract: A method by which a transmission user equipment (UE) transmits a sounding reference signal (SRS) in a wireless communication system, according to the present disclosure, can comprise the steps of: receiving, from a base station, first configuration information including a timing advance and/or a timing advance offset; receiving, from the base station, second configuration information including SRS configuration; and transmitting an SRS to a reception UE on the basis of the first configuration information and the second configuration information. The timing advance is the same as the downlink reception timing of the reception UE, and the timing advance offset can be set to transmit the SRS. The timing advance can have a value corresponding to the downlink reception timing of the reception UE.

Abstract: The present disclosure relates to a method and device for communication by a base station in a wireless communication system supporting multiple reconfigurable intelligent surface (RIS) devices. According to an embodiment A method for operating a base station, the method comprises selecting at least two reference reconfigurable intelligent surface (RIS) devices for estimating a position of a user equipment (UE) from among a plurality of RIS devices, estimating position information about the UE using the selected at least two reference RIS devices, receiving an uplink pilot signal of the UE through the selected at least two reference RIS devices; and estimating a multi-RIS channel for the plurality of RIS devices based on the uplink pilot signal of the UE and the estimated position information about the UE.

Abstract: Disclosed is a method for reporting angle of departure (AoD) information by a base station in a wireless communication system. Particularly, the method is characterized by: transmitting multiple reference signals to a terminal; receiving, from the terminal, AoD information comprising information related to at least one reference signal obtained on the basis of the reception signal strength of the terminal, among the multiple reference signals; and transmitting the AoD information to a location server, wherein the multiple reference signals can be multiple synchronization signal/physical broadcast channel (SS/PBCH) blocks or multiple channel state information-reference signals (CSI-RSs).

Abstract: Disclosed is an organic light emitting diode display device. The disclosed organic light emitting diode display device includes an overcoat layer disposed on a substrate that is divided into an emissive area and a non-emissive area, and has multiple micro lenses in the emissive area and at least one depression in the non-emissive area. The organic light emitting diode display device further includes: a first electrode disposed on the overcoat layer, wherein the first electrode is disposed in the entire emissive area and in a part of the non-emissive area; a bank pattern disposed in the non-emissive area so as to be superposed on the depression; an organic light emitting layer disposed on the substrate; and a second electrode disposed on the organic light emitting layer. Accordingly, the organic light emitting diode display device may prevent light leakage.

Abstract: The present specification provides a method for receiving gap symbol information, the method being performed by a node in a wireless communication system. The method is characterized by including: receiving the gap symbol information, wherein the gap symbol information indicates the number of gap symbols pertaining to switching between a mobile terminal (MT) operation and a distributed unit (DU) operation; and performing an integrated access and backhaul (IAB) operation on the basis of the gap symbol information, wherein the node does not perform the IAB operation on the symbol indicated by the gap symbol information.

Abstract: A semiconductor package includes a first semiconductor structure including a first semiconductor layer having a first active surface and a first circuit device thereon and a first inactive surface and first bonding layer; a second semiconductor structure on the first semiconductor structure and including a second semiconductor layer having a second active surface and second circuit device thereon and a second inactive surface, a second frontside bonding layer, and a second backside bonding layer on the second inactive surface; and a third semiconductor structure on the second semiconductor structure and including a third semiconductor layer having a third active surface including a third circuit device thereon and a third inactive surface, and a third bonding layer, wherein the first bonding layer is bonded to the second frontside bonding layer, and the third bonding layer is bonded to the second backside bonding layer.

Abstract: Disclosed are a method and device for uplink transmission and reception in a wireless communication system. A method for a terminal to perform uplink transmission in a wireless communication system according to an embodiment of the present disclosure may comprise the steps of: receiving at least one timing advance (TA) parameter from a base station; calculating the TA on the basis of at least one valid TA parameter; and performing uplink transmission on the basis of the TA, wherein the at least one TA parameter includes at least one common TA parameter, a second common TA parameter of a second order is valid on the basis that the first common TA parameter of a first order is valid, and the first order is lower than the second order.

Abstract: The present disclosure provides a method of receiving system information by a user equipment in a wireless communication system. Particularly, the method may include receiving a Physical Downlink Control Channel (PDCCH) including Downlink Control Information (DCI) for scheduling the system information; descrambling a Cyclic Redundancy Check (CRC) of the DCI based on a System Information-Radio Network Temporary Identifier (SI-RNTI); obtaining first information on a type of the system information from a specific bit included in the DCI; receiving the system information based on second information for scheduling the system information, which is included in the DCI; and determining the type of the system information based on the first information.

Abstract: A method of operating a first device in a wireless communication system according to at least one of the examples disclosed herein may include receiving, through higher layer signaling, configuration information related to positioning, performing a phase measurement for a reference signal based on the configuration information, and transmitting a measurement report related to positioning based on the phase measurement. The phase measurement may include a pair of a first phase measurement and a second phase measurement. The first phase measurement may be related to a carrier phase measurement (CPM) of a carrier of the reference signal, and the second phase measurement paired with the first phase measurement may have a different resolution than the first phase measurement.

Abstract: A process chamber door for closing or opening an entrance of a process chamber through which a substrate to be process is loaded includes a seal plate including a front surface and a rear surface opposite to each other in a first direction, a connection block connected to the rear surface of the seal plate and including a central portion and two side portions connected to the rear surface of the seal plate, and a shaft connected to the central portion of the connection block. The connection block includes a first hinge groove and a second hinge groove. The first hinge groove is exposed at a bottom surface and a side surface of the connection block and the second hinge groove is exposed at an upper surface and the side surface of the connection block.

Abstract: The present invention discloses a method for a terminal to receive a synchronization signal in a wireless communication system. Particularly, the method includes the steps of receiving a synchronization block including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcasting channel (PBCH) and receiving a DMRS (demodulation reference signal) via resource region in which the PBCH is received. In this case, an index of the synchronization block can be determined in consideration of a sequence of the DMRS.

Abstract: An air control system and method using air in an upper zone of the atmosphere are disclosed. An air control system using air in an upper zone of the atmosphere includes: a floating body 11 provided to stay in the upper zone of the atmosphere; air transporting pipes 15a and 15b interlocked with the floating body 11 to transport air in the upper zone of the atmosphere; blowers 22a and 22b mounted below the air transporting pipe 15a and 15b; and an air transporting controller 18 controlling an operation of the blowers 22a and 22b. According to the embodiment of the present invention, it is possible to implement functions such as cooling, drying, and purifying of the surrounding air, removing mist, or generating clouds through the transport of dry and low-temperature clean air in the upper zone of the atmosphere with a simple structure.

Abstract: A terminal according to one embodiment of the present disclosure can receive a physical downlink control channel (PDCCH) on the basis of the detection of a paging early indication (PEI) and can receive a physical downlink shared channel (PDSCH) on the basis of the PDCCH, a slot in which the PDSCH is to be received can be determined on the basis of one from among a plurality of time domain resource allocation (TDRA) tables set in the terminal, and the value “N” of a TDRA field included in DCI, and the plurality of TDRA tables can include a first TDRA table including at least one entry for same-slot scheduling of the PDCCH and the PDSCH, and a second TDRA table including only entries for cross-slot scheduling of the PDCCH and the PDSCH.

Abstract: The present disclosure provides a method of transmitting a Physical Broadcasting Channel (PBCH) by a base station in a wireless communication system. Particularly, the method may include generating a PBCH payload including bits indicating a frame in which the PBCH is transmitted; scrambling at least some of the bits included in the PBCH payload using second and third least significant bits among the bits; and transmitting the bits of the PBCH payload including the at least some scrambled bits to a user equipment.

Abstract: One disclosure of this specification provides a method for receiving a synchronization signal block (SSB) by a user equipment (UE). The method may include: determining frequency locations of multiple SSBs; and receiving at least one SSB among the multiple SSBs. The multiple SSBs may be configured to be arranged spaced apart from each other by a predetermined offset. The at least one SSB may be located at an interval of 1.2 MHz on a frequency axis.

Abstract: A hardmask composition and a method of forming patterns using the hardmask composition, the composition including a polymer including a moiety derived from a compound represented by Chemical Formula 1; and a solvent: