Abstract: Certain aspects of the present disclosure provide techniques for motor-based lens beamformer direction fine tuning. An exemplary method performed by a first apparatus includes communicating one or more transmissions with a second apparatus using a plurality of communication beams, generated by at least one lens beamformer of the first apparatus, having different spatial directions and adjusting, using at least one motor of the first apparatus coupled with the at least one lens beamformer, the different spatial directions of the plurality of communication beams generated by the at least one lens beamformer.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may establish a sub-terahertz (sub-THz) link with a sub-THz node, wherein the sub-THz link is associated with a secondary cell (SCell) of the network node, and the sub-THz link is associated with a long-lasting data offloading session. The network node may schedule an additional synchronization and beam management session between the network node and the sub-THz node. The network node may perform synchronization and beam management during the additional synchronization and beam management session to achieve a time synchronization between the network node and the sub-THz node and to refine an SCell transmit (Tx) beam and an SCell receive (Rx) beam for the sub-THz link. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform an initialization procedure with an extended reality (XR) device including a time synchronization and a frequency synchronization. The UE may receive, from the XR device and at a first periodicity, first pilot signals, and may transmit, based on receiving the first pilot signals, a first control message indicating a first set of correction factors to apply to at least one of the time synchronization or the frequency synchronization. The UE may transmit, to the XR device and at a second periodicity, a second pilot signal, and may receive, from the XR device, a second control message including samples of the second pilot signal. The UE may transmit, based on the samples, a third control message indicating a second set of correction factors to apply to the time synchronization between the UE and the XR device.

Abstract: Methods, systems, and devices that support channel estimation reference signals for pre-equalization are described. In some examples, channel state information (CSI) for a link between a user equipment (UE) and another wireless device may be acquired by the UE based on samples of a downlink reference signal transmitted from the UE to the wireless device. Specifically, the wireless device (e.g., an extended reality (XR) device) may obtain samples of the downlink reference signal (e.g., a channel estimation reference signal) and report or indicate (e.g., transmit) the samples to the UE via an uplink transmission. For example, the reference signals may be sampled at the wireless device side, and CSI may be obtained using the samples signaled back to the UE by the wireless device. The UE may perform channel estimation based on the received samples, which may enable transmit pre-equalization of signals sent to the wireless device.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform an initial pairing procedure with an extended reality (XR) device via a narrow band (NB) sidelink connection. The initial pairing procedure may establish an ultra wideband (UWB) sidelink connection between the UE and the XR device. The UE may transmit control signaling indicating a set of resources for the UWB sidelink connection. The set of resources may correspond to a local timeline for sidelink communications between the UE and the XR device. The UE may translate a cellular timeline for communications to generate the local timeline. The UE may transmit a triggering signal via the NB sidelink connection initiating sidelink communications between the UE and the XR device according to the local timeline for sidelink communications.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver user equipment (UE) may receive, from a network node via an access link, a first set of one or more signals including at least one instance of a data set. The UE may receive, from a transmitter wireless device via a sidelink, a second set of one or more signals including a plurality of repetitions of the data set and including a set of one or more respective sidelink reference signals corresponding to the plurality of repetitions of the data set. The UE may perform a data processing procedure, according to the set of one or more respective sidelink reference signals, on the first set of one or more signals and the second set of one or more signals to generate the data set. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure provide techniques for using phase tracking reference signals (PTRSs) for transmission pre-equalization modes. A method generally includes sending, to a device, one or more capability indications, the one or more capability indications indicating a support for a transmission pre-equalization mode; receiving, from the device, a message comprising one or more PTRS pilot signals, the message comprising the one or more PTRS pilot signals based on the one or more capability indications; and obtaining, from the message, one or more receiver side measurements, the one or more receiver side measurements obtained based on the one or more PTRS pilot signals. In some aspects, the device may perform a transmission pre-equalization of the message, the transmission pre-equalization performed based on the support for the transmission pre-equalization mode.

Abstract: A device may one or more memories, individually or in combination, having instructions. A device may one or more processors, individually or in combination, configured to execute the instructions and cause the apparatus to: receive a sampled reference signal; and transmit an indication of a communication scheme selected from a plurality of communication schemes based at least in part on the sampled reference signal.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a duty cycle for transmitting one or more orthogonal frequency division multiplexing (OFDM) symbols via an ultra-wideband (UWB). The UE may transmit the one or more OFDM symbols via the UWB based at least in part on the duty cycle. Numerous other aspects are described.

Abstract: A method of wireless communication at a UE is disclosed herein. The method includes obtaining an indication of a first TA for a PCell, where the PCell is associated with a first frequency band. The method includes estimating a timing offset between the PCell and a SCell. The method includes deriving a second TA for the SCell based on the first TA and the timing offset, where the SCell is associated with a second frequency band that is greater than the first frequency band. The method includes transmitting, for a network node, data or at least one signal via the SCell based on the second TA.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may generate a pre-equalized waveform associated with a multiple-input multiple-output (MIMO) communication system. The wireless communication device may transmit the pre-equalized waveform using a per-MIMO-layer transport block (TB). Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a repeater may receive control information via a user equipment (UE) entity of the repeater, the control information associated with operation of a wideband entity and a narrowband entity of the repeater. The repeater may receive synchronization information via the narrowband entity, the synchronization information associated with synchronization of wideband communications of the wideband entity. The repeater may receive and forwarding the wideband communications via the wideband entity and based at least in part on the control information and the synchronization information. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, during a first portion of a time cycle, one or more synchronization signal blocks (SSBs) according to a first periodicity. The UE may receive, during a second portion of the time cycle, one or more other SSBs according to a second periodicity that is higher than the first periodicity. Numerous other aspects are described.

Abstract: Aspects described herein relate to transmitting one or more parameters related to selecting, by a network node, a frequency for transmitting a synchronization signal block (SSB), and receiving, based on transmitting the one or more parameters, the SSB from the network node over the frequency. Other aspects relate to receiving the one or more parameters and selecting he frequency for transmitting the SSB based on the one or more parameters.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain synchronization with a primary cell (PCell) of a wireless network. The UE may receive an indication to activate a secondary cell (SCell) of the wireless network. The UE may receive a reference signal (RS) of the SCell, reception of the RS of the SCell, based at least in part on obtaining synchronization with the PCell, comprising one or more of: using a reduced candidate beams list for an initial beam search or using a reduced time domain range for receiving the RS of the SCell. The UE may communicate via the SCell based at least in part on synchronization with the SCell and using a beam pair obtained using the RS of the SCell. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information for a sounding reference signal (SRS) resource set, the configuration information indicating a usage type for the SRS resource set associated with Doppler tracking and a configuration for one or more associated SRS resource identifiers. Some configuration parameters of the SRS resource set and the associated SRS resource identifiers can be dynamically reconfigured in order to allow adaptive SRS time domain pattern for enhanced Doppler parameter estimation and/or synchronization loop tracking, among other examples. The UE may transmit one or more SRSs in accordance with the configuration or dynamic reconfiguration information for the SRS resource set and the associated SRS resources based at least in part on receiving the configuration and/or reconfiguration information. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a first downlink transmission. The UE may receive an uplink transmission that includes channel state information including an indication of one or more samples of the first downlink transmission, wherein the one or more samples, before reception of the uplink transmission, are unprocessed for a channel estimation. The UE may transmit a second downlink transmission in accordance with the channel estimation that is based at least in part on the one or more samples. Numerous other aspects are described.

Abstract: An apparatus may be a wireless device such as a user equipment (UE) configured to receive, from a wireless device associated with the UE, a first indication of a capability to perform an equalization operation and transmit, to the wireless device, a second indication of an allocation of resources associated with a pre-equalized demodulation reference signal (DMRS) for the equalization operation, wherein the allocation of resources is for less than all slots within a set of slots associated with a same pre-equalization.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a capability for the UE to support narrowband control signaling over a narrowband component carrier that is separate from data channel signaling over one or more wideband component carriers. The UE may receive control signaling indicating a configuration for the narrowband component carrier based on the capability and monitor for the narrowband control signaling on the narrowband component carrier based on the configuration. The UE may perform signal processing on narrowband signaling using a dedicated narrowband receive chain, which may include lower power components than a receive chain for wideband signaling.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may operate in a non-linear region of a power amplifier by reporting an indication of power amplifier characteristics and backoff values to a receiving device. The indication of the power amplifier characteristics and the backoff values may be based on power amplifier operation in the non-linear region of power amplifier characteristic curves. The transmitting device may transmit, to the receiving device, signaling using a single carrier waveform at a transmission power in the non-linear region of the power amplifier characteristic curves based on the indication. The receiving device may receive the signaling and use the power amplifier characteristics and the backoff values to perform debiasing and nonlinearity corrections to recover the original signaling.