Apparatuses, methods, and systems are disclosed for communication configuration selection. One apparatus includes a receiver that receives configuration information for multiple communication configurations. The configuration information corresponds to services having different performance requirements, and the performance requirements include latency, reliability, peak data rate, efficiency overhead, control overhead, system capacity, or some combination thereof. The apparatus also includes a processor that selects a communication configuration of the multiple communication configurations. The apparatus communicates using the selected communication configuration.

A wireless device receives configuration parameters indicating: a plurality of a channel occupancy time (COT) parameters of a COT of a cell; and a position parameter for the COT of the cell. A downlink control information (DCI) comprising a plurality of fields is received. The position parameter indicates a position of a field, of the plurality of fields. The field indicates a COT parameter, of the plurality of COT parameters. A transport block is transmitted via uplink resources of the COT with the COT parameter.

A communication technique for convergence between a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system and a technology for Internet of Things (IoT), and a system thereof, are provided. The communication technique and system may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety related services, etc.) based on the 5G communication technology and the IoT-related technology. A method and apparatus for determining a channel access procedure in a wireless communication system are provided.

Wireless communications systems and methods related to transmission of reverse-link grants for anchor based sidelink communication are provided. A first user equipment (UE) determines a plurality of reverse-link grants for a respective plurality of UEs. The first UE transmits first sidelink control information (SCI) over a physical sidelink control channel (PSCCH). The first SCI may indicate whether user data follows in the physical sidelink shared channel (PSSCH). The first UE transmits a demodulation reference signal (DMRS) and second SCI over the PSSCH. The second SCI comprises the plurality of reverse-link grants in a block. The second SCI is rate matched from a with the DMRS and the third SCI being rate matched from the start of the PSSCH and including the block of reverse-link grants.

An electronic device in a wireless communication system is provided. The electronic device includes a communication circuit, a memory, and a processor, wherein the memory stores instructions that cause the processor to identify a difference between a carrier frequency for communication with a terminal and a reference point set for a remote interference management (RIM) reference signal (RS), identify a first share obtained by dividing the difference into subcarrier intervals, and the remainder, rotate the phase of at least one subcarrier in a first orthogonal frequency-division multiplexing (OFDM) symbol including at least the other part of the RIM RS, based on at least one from among a cyclic prefix (CP) length of a second OFDM symbol including at least a part of the RIM RS, the carrier frequency, and the remainder, and rotate the phase of a subcarrier in the second OFDM symbol based on the carrier frequency.

Various solutions for random access channel (RACH) preamble design in non-terrestrial network (NTN) communications with respect to user equipment and network apparatus are described. An apparatus may initiate a RACH procedure. The apparatus may determine a fractional frequency offset pattern or a cover code across groups of preamble sequences. The apparatus may generate a RACH preamble signal according to at least one of the fractional frequency offset pattern and the cover code. The apparatus may transmit the RACH preamble signal to a network node.

A method for performing wireless communication by a first apparatus and an apparatus for supporting same are provided. The method may comprise: measuring, in a first slot, a channel busy ratio (CBR) for a resource pool; determining power for physical sidelink shared channel (PSSCH) transmission in a second slot, based on the CBR measured in the first slot; and performing, to a second device, the PSSCH transmission in the second slot based on the power, wherein the first slot is a slot before N slots from the second slot, wherein the N is determined based on subcarrier spacing (SCS) related to the PSSCH transmission, and wherein the N is a positive integer.

The present disclosure provides a method and a User Equipment (UE) supporting transmission power adjustment. The UE receiving a first signaling; and transmitting a first radio signal; wherein, a first modulation symbol sequence is used to generate the first radio signal, the first modulation symbol sequence employs a target waveform, a first bit block is used to generate the first modulation symbol sequence, the first signaling is used to determine the target waveform out of X waveforms, the X is a positive integer greater than or equal to 2, a transmitting power of the first radio signal is a first power, the target waveform is used to determine an upper bound of the first power. The method can adjust the UE transmitting power according to the waveform of the uplink transmission, thus reducing the power loss of the UE or improving the coverage performance of the uplink transmission.

Provided are a configuration method and a transmission method of a new reference signal for frequency offset estimation in a novel wireless communication system. The method may include configuring a synchronization signal to be transmitted through a first bandwidth part of one or more bandwidth parts configured by dividing an entire bandwidth into one or more parts, allocating the one or more reference signals for estimating the frequency offset on one or more resources other than a resource for configuring the synchronization signal, and transmitting the one or more reference signals for estimating the frequency offset.

Methods and devices are provided that enable configuration of a selected set of electronic devices (EDs) that are allocated the same time-domain resources and either orthogonal or the same frequency interlaces on a same unlicensed channel. Configuring the selected set of EDs in order to align transmission starting points in the unlicensed channel and utilizing blocking symbols for at least some of the transmission starting points, may mitigate mutual blocking during LBT procedures.