Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first synchronization signal for synchronizing with a cell, the first synchronization signal transmitted at a first periodicity by a base station serving the cell. The UE may then receive, subsequent to the synchronizing, a second synchronization signal for resynchronizing with the cell. In some cases, the second synchronization signal may be transmitted by the base station according to a second periodicity that is different from the first periodicity. In some cases, the second synchronization signal may include a plurality of repetitions of a first sequence that is based at least in part on a cell identifier of the cell. The UE may communicate over the cell with the base station based at least in part on the resynchronizing.

The present specification relates to a method for performing uplink transmission in a wireless communication system. More particularly, a method performed by a terminal comprises the steps of: transmitting a PRACH preamble to a base station on the basis of a transmission unit indicating a physical layer resource set; receiving, from the base station, a random access response (RAR) including a TA value; and transmitting the uplink signal on the basis of the RAR, wherein transmission unit setting information about the transmission unit, set in the terminal, is transmitted through the PRACH preamble or the uplink signal to the base station.

An electronic device and method for managing an antenna operating in a combination of frequency bands. The electronic device comprises at least one antenna including a plurality of antenna elements, a transceiver operably connected with the at least one antenna and configured for communication over multiple frequency parts. The electronic device also comprises a processor operably connected to the transceiver, the processor configured to determine the multiple frequency parts; identify, from a configuration received in response to the multiple frequency parts reported in the PUCCH, a combination of one or more frequency parts from the multiple frequency parts for performing the communication; obtain a beamforming codebook; and apply one or more beams within the beamforming codebook for performing the communication.

The present disclosure provides techniques configuring channel state information (CSI) reporting for certain service types, such as the ultra-reliable low latency communications (URLLC) service type. In some cases, a UE may obtain information regarding a first set of channel state information (CSI) reporting configurations for a first service type separate from a second set of CSI reporting configurations for a second service type, receive a first downlink control information (DCI) scheduling a CSI report for the first service type on at least one physical uplink shared channel (PUSCH), generate at least one CSI report for the first service type based on one of the first set of CSI reporting configurations selected based on a field in the DCI, and transmitting the CSI report for the first service type on the PUSCH.

Aspects of this disclosure relate to assigning scrambling identifiers to user equipments. A first scrambling identifier can be assigned to each user equipment of a group, such that the first scrambling identifier is the same for each of the user equipments of the group. A second scrambling identifier can be assigned to each of the user equipments of the group, such that the second scrambling identifier is different for each of the user equipments of the group. A selected scrambling identifier can be used to generate a reference signal sequence.

A wireless multiple antenna system (200) uses a multi-antenna subsystem (211) to generate a composite sample waveform by continuously sweeping a plurality of receive beams (RX1-RXM) during each SSB transmission in a plurality of transmit beams (TX1-TX64), generating a composite received signal strength metric value from a batch of samples collected over the plurality of receive beams to determine the presence of the SSB, and then jointly searching the composite sample waveform for an optimal receive beam and an SSB frequency of any detected SSB that are used by the UE (210) to perform a cell search which matches a transmit beam from the base station (201) to the optimal receive beam.

Disclosed are techniques related to wireless communication. In an aspect, a sequence generating entity factorizes a comb size N into prime factors of N, and generates one or more offset sequences for a reference signal for positioning based on one or more sequence lists associated with the prime factors of N and a number of symbols M over which the reference signal is scheduled.

Aspects are described for a user equipment (UE) comprising a transceiver configured to enable wireless communication with a serving cell and a processor communicatively coupled to the transceiver. The processor is configured to determine a reference signal sequence that comprises a primary synchronization signal (PSS) sequence and a secondary synchronization signal (SSS) sequence of a target cell. The processor is further configured to receive a signal sequence from the target cell and calculate an overall correlation value based on the reference signal sequence and the received signal sequence. The processor is further configured to determine that the overall correlation value is above a threshold and detect a synchronization signal block (SSB) of the target cell based on the received signal sequence. Finally, the processor is configured to establish a wireless connection with the target cell based on the SSB.

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.

Aspects of the disclosure include an apparatus at base station side in a wireless communication system for multi-user superposition transmission. The apparatus includes a superposition control unit and an indication generation unit. The superposition control unit is configured to insert, into a data stream of each user equipment in a group of user equipment comprising a plurality of user equipment, a demodulation reference signal corresponding to the data stream, and superpose demodulation reference signals corresponding to data streams of respective user equipment. The indication generation unit is configured to generate, for at least a first user equipment among the plurality of user equipment, an indication regarding a demodulation reference signal corresponding to a data stream of other user equipment among the plurality of user equipment, to assist the first user equipment in demodulating data transmitted in the multi-user superposition transmission.