Abstract: Provided are a method and an apparatus for transmitting uplink data on the basis of contention in a wireless communication system. Specifically, a terminal receives, from a base station, allocation information for a contention zone in one resource zone. The allocation information includes a configuration field indicating locations and the number of contention zones. The terminal determines whether repetition of uplink data is to be performed, on the basis of downlink channel information. When it is determined that the repetition of uplink data is to be performed, the terminal transmits, to the base station, uplink data through all contention zones indicated by the configuration field. When it is determined that the repetition of uplink data is not to be performed, the terminal transmits, to the base station, uplink data through one contention zone arbitrarily selected from among all the contention zones indicated by the configuration field.

Abstract: A method for performing non-orthogonal multiple access (NOMA) scheme-based communication by a base station may comprise the steps of: determining at least one transmission data resource group on the basis of a scheduling request (SR) reception reliability; transmitting information on the determined at least one data resource group to a terminal; and receiving uplink data from the terminal via a predefined uplink data transmission area in the at least one data resource group, wherein the at least one data resource group and an SR resource group including an SR transmission area, in which an SR can be transmitted, are overlappingly allocated in a physical resource area, and the predefined uplink data transmission area within the at least one data resource group and the SR transmission area of the SR resource group overlap each other in the physical resource area.

Abstract: In the present invention, disclosed are a method and terminal for performing beam management in a wireless connection system. In particular, the terminal comprises a radio frequency (RF) unit and a processor, and the processor controls the RF unit to receive information including a beam management region from a base station, wherein the beam management region may comprise a reference signal (RS) and preamble region, a first transition time region for transmission beam steering, and a second transition time region for reception beam steering.

Abstract: A method for transmitting feedback information by a first user equipment (UE) in a wireless communication system supporting a full duplex radio (FDR) scheme includes measuring, based on information on a second UE received from a base station (BS), an inter-device interference (IDI) related to the second UE; and transmitting, to the BS, feedback information related to the IDI.

Abstract: A method by which a terminal transmits an uplink signal in a wireless communication system, according to one embodiment of the present invention, includes: transmitting any one of a plurality of preambles; and performing a contention-based transmission of data in consideration of the transmitted preamble, wherein each of the plurality of preambles is linked with a plurality of data resource areas, and when the contention-based transmission of data is performed, the terminal can repeatedly transmit the data through the plurality of data resource areas linked with the transmitted preamble. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.

Abstract: The present invention relates to a method and device for allowing a terminal to transmit, to a base station, uplink data in a wireless communication system. According to the present invention, the terminal: performs a random access procedure with a base station; sets transmission power for transmitting first uplink data; and transmits, to the base station, the first uplink data according to the set transmission power, wherein the transmission power can be set according to an altitude of the terminal.

Abstract: Provided are a method and a device for performing communication using a non-orthogonal code multiple access scheme in a wireless communication system. Specifically, a terminal divides a terminal identifier into a first field, a second field, a third field and a fourth field and selects a first reference signal, a second reference signal, a third reference signal and a fourth reference signal. On the basis of the first reference signal, the second reference signal, the third reference signal or the fourth reference signal, the terminal transmits contention-based data to a base station. The first reference signal is selected on the basis of the first field and the maximum number of reference signals. The second reference signal is selected on the basis of the second field and the maximum number of reference signals. The third reference signal is selected on the basis of the third field and the maximum number of reference signals.

Abstract: A method for measuring and reporting, by a terminal, a positioning reference signal (PRS) in a wireless communication system according to one embodiment of the present invention comprises the steps of: measuring a plurality of positioning reference signals (PRSs) to which beamforming is applied; and reporting, to a base station, measurement results for at least two of the plurality of PRSs, wherein the plurality of PRSs are received via different transmission beams, and the terminal may report, to the base station, at least one from among transmission beam identification information indicating through which transmission beam each of the at least two PRSs has been received and resource identification information indicating through which resource each of the at least two PRSs has been received, together with the measurement results. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, a base station or a network.

Abstract: A method for transmitting an uplink signal by a terminal in a wireless communication system according to an embodiment of the present invention comprises the steps of: receiving information indicating one of a cyclic prefix-orthogonal frequency divisional multiplexing (CP-OFDM) scheme and a discrete Fourier transform-spreading-OFDM (DFT-s-OFDM) scheme from a base station; generating a waveform of an uplink signal according to the indicated scheme; and transmitting the generated waveform of the uplink signal to the base station, wherein modulation of the uplink signal by a terminal through a modulation scheme having a lowest modulation order may be allowed only when the waveform of the uplink signal is generated by the DFT-s-OFDM scheme.

Abstract: Provided are a method and a device for transmitting uplink data by using a non-orthogonal code multiple access scheme in a wireless communication system. Particularly, a terminal receives control information from a base station. The terminal selects a terminal-specific codeword or receives allocation information of the terminal-specific codeword on the basis of the control information. The terminal transmits uplink data by using the terminal-specific codeword. The terminal-specific codeword is determined as a codeword having a value with a low peak-to-average power ratio (PAPR), when the terminal is located on the outside of a cell. The terminal-specific codeword is determined as a codeword having a value with a high PAPR, when the terminal is located in the center of the cell.

Abstract: An embodiment of the present specification may provide a method for performing positioning using a drone by a terminal in a wireless communication system. The method for performing positioning using a drone by a terminal may comprise the steps of: transmitting information on a drone-positioning reference signal (D-PRS) configuration to a base station; receiving the D-PRS configuration information from the base station; receiving a positioning reference signal (PRS) from the base station and receiving the D-PRS from the drone; obtaining position-related information of the terminal on the basis of the PRS and the D-PRS; and transmitting the position-related information to the base station. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, a base station or a network.

Abstract: According to an embodiment of the present invention, a method is disclosed for transmitting a signal on the basis of a competition-based non-orthogonal multiple access scheme, by means of a terminal in a wireless communication system. At this time, the method for transmitting a signal comprises: a step of transmitting a first codeword on the basis of the competition-based NoMA scheme; a step of receiving a negative response to the first codeword transmission from a base station; a step of selecting a second codeword, taking into account a magnitude vector and a correlation of the first codeword; and a step of transmitting the selected second codeword on the basis of the competition-based NoMA scheme.

Abstract: A method for transmitting, by a user equipment, reports for range estimation may comprise the steps of: receiving a signal from each of a plurality of beams of a base station; calculating a time delay or a phase difference of a signal for each of the plurality of beams; and reporting, to the base station, beam index information indicating a corresponding beam with the smallest time delay or the smallest phase difference on the basis of the calculation. The user equipment is capable of communicating with at least one of another user equipment, a user equipment related to an autonomous driving vehicle, a base station or a network.

Abstract: A method for a first wireless device receiving a reference signal for measuring a distance in a wireless communication system, according to one embodiment of the present invention, may comprise the steps of: receiving, from a second wireless device, a first reference signal comprising a first sinusoidal signal having a first angular frequency and a first initial phase value, and a second sinusoidal signal having a second angular frequency and a second initial phase value; acquiring the phase difference between the first sinusoidal signal and the second sinusoidal signal on the basis of a fast Fourier transform (FFT) performed on the first reference signal; correcting the phase difference on the basis of the first initial phase value and the second initial phase value; and transmitting, to the second wireless device, a second reference signal for measuring a distance, and a third reference signal representing information on the corrected phase difference.

Abstract: A network device includes a substring indicator memory and a signature search module for detecting a signature pattern within a stream of network traffic. The signature search module is configured to receive the stream of network traffic, identify a first subject substring from the stream of network traffic, generate a first substring indicator for the first subject substring using a first bitmask on the first subject substring, the first bitmask identifying a plurality of masked bits of the first subject substring, identify a first counter using the first substring indicator as an address into the substring indicator memory, and generate an indication that the signature pattern may be present in the stream of network traffic based on a value of the first counter.

Abstract: There is provided a method for receiving, by a user equipment, data using a 2-dimensional (2-D) channel-based transmission scheme, the method comprising: receiving information about allocation of a resource from a base station, wherein the 2D channel-based transmission scheme is applied to the resource; and receiving data on the resource according to the 2D channel-based transmission scheme and based on the resource allocation information.

Abstract: A method for a communication apparatus selectively operating a duplex mode in a wireless communication system may comprise the steps of: operating in a half-duplex radio (HDR) mode in a resource including a physical channel or a signal used for initial access prior to radio resource control (RRC) connection; and operating in a full duplex radio (FDR) mode after the initial access.

Abstract: An improved layered decoding method for a low density parity check (LDPC) code and a device therefor are disclosed. Disclosed is the layered decoding method for an LDPC code, capable of determining whether decoding is successful by performing a syndrome check on each check node at every variable node update. In addition, the syndrome check can be performed by using reduced variable nodes, thereby reducing decoding power consumption and decoding time consumption.

Abstract: Disclosed herein is a method of transmitting a signal of a user equipment (UE) in a wireless communication system. The method includes generating an optical signal related to data transmission, combining an electrical signal for the data with the optical signal, and transmitting a combined signal.

Abstract: Provided are a method and equipment for transmitting uplink data by using a non-orthogonal code multiple access technique in a wireless communication system. Particularly, a terminal receives, from a base station, allocation information on physical resource blocks. The terminal acquires a spreading factor on the basis of the number of physical resource blocks included in the allocation information. The terminal determines a NoMA codebook set on the basis of the spreading factor. The terminal transmits uplink data generated on the basis of terminal-specific codewords included in the NoMA codebook set.