Abstract: Methods, systems, and devices for wireless communication are described. Various aspects relate to mixed numerology slot structures for sidelink communication. Some aspects more specifically relate to mixed numerology slot structures that define how a slot may be associated with two or more subcarrier spacings (SCSs). For example, a mixed numerology slot structure may define that a first set of one or more symbols of a slot is associated with a first SCS and that a second set of one or more symbols of the slot is associated with a second SCS. Symbols of the slot that are associated with a communication direction switch or automatic gain control (AGC) training may be associated with a relatively largest SCS. Other symbols of the slot may be associated with any combination of one or more other SCSs in accordance with the mixed numerology slot structure.

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: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain one or more joint scheduling rules associated with Long Term Evolution (LIE) communications and New Radio (NR) communications in a half-duplex communication system. The UE may identify a channel busy ratio (CBR) associated with the half-duplex communication system. The UE may prioritize an LTE communication or an NR communication based at least in part on the one or more joint scheduling rules and the CBR. Numerous other aspects are described.

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: Methods, systems, and devices for wireless communications are described. In some cases, a network entity may estimate an uplink sampling time offset (STO) associated with a user equipment (UE) based on an uplink signal from the UE and may remove the uplink STO from a first estimated channel to generate a second estimated channel. Thus, the network entity may equalize a first downlink signal in accordance with the second estimated channel and may transmit the first downlink signal to the UE. The network entity may additionally receive an indication of a downlink STO associated with the UE based on transmission of the first downlink signal and may equalize a second downlink signal in accordance with a third estimated channel, where the third estimated channel is based on (e.g., free of) the uplink STO and the downlink STO.

Abstract: Method and apparatus for dynamic pre-equalization switching. The apparatus selects a pre-equalization type based on a pre-equalization criteria. The apparatus transmits a transmission to a second wireless device based on the pre-equalization type. The pre-equalization type is a first pre-equalization type, and the apparatus may switch from the first pre-equalization type to a second pre-equalization type based on a switch criteria. The apparatus may transmit a second transmission to the second wireless device based on the second pre-equalization type.

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: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of transmission spur frequency locations associated with transmissions of a network node. The UE may receive a communication from the network node, receiving the communication comprising performing one or more of channel estimation or noise estimation based at least in part on the transmission spur frequency locations. Numerous other aspects are described.

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: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a transmitting device, an indication of an instantaneous gain associated with an amplitude distortion associated with frequency division multiplexed downlink communications to the UE from the transmitting device. The UE may receive the frequency division multiplexed downlink communications from the transmitting device over frequency resources allocated to the UE, wherein receiving the frequency division multiplexed downlink communications comprises applying a digital post distortion model to the frequency division multiplexed downlink communications according to the instantaneous gain.

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.