Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may measure inter-band interference between uplink communications transmitted by the UE and downlink communications received by the UE. In such cases, the inter-band interference may be based on a second frequency band associated with the uplink communications being within a threshold frequency of a first frequency band associated with the downlink communications. For example, the first frequency band may be associated with a first frequency of 3.5 gigahertz and the second frequency band may be associated with a second frequency of 7 gigahertz. As such, the UE may transmit a report indicative of the inter-band interference between uplink communications and downlink communications based on measurement of the inter-band interference. In such cases, the report may include an indication of one or more metrics associated with the inter-band interference.

Abstract: Certain aspects of the present disclosure provide techniques for beam-based pre-distortion training. An example method of calibration of a wireless communications device includes obtaining a first configuration that indicates a first set of beams for communication of one or more first calibration signals between the wireless communications device and a receiver. The method further includes obtaining an indication of the one or more first calibration signals communicated between the wireless communications device and the receiver. The method further includes obtaining one or more first parameters for distortion calibration associated with communications via one or more beams of the wireless communications device based at least in part on the one or more first calibration signals. The method further includes sending a first signal based on the one or more first parameters.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, such as from a network entity, control signaling that indicates multiple discontinuous reception (DRX) configurations for the UE, where the multiple DRX configurations include a first DRX configuration associated with a first set of wake-up signal monitoring occasions and a second DRX configuration associated with a second set of wake-up signal monitoring occasions. The first DRX configuration and the second DRX configuration may both be active during a time period. The UE may monitor, during the time period, the first set of wake-up signal monitoring occasions in accordance with the first DRX configuration and the second set of wake-up signal monitoring occasions in accordance with the second DRX configuration.

Abstract: In some examples of the techniques described herein, the latency of connected mode discontinuous reception (C-DRX) may be reduced by utilizing a low power wake-up signal (LP-WUS). For instance, physical downlink control channel (PDCCH) monitoring may be triggered based on the LP-WUS with the C-DRX configuration as a power saving procedure for a radio resource control (RRC) connected mode. In some approaches, the cycles of the additional PDCCH monitoring triggered by LP-WUS may be coordinated with C-DRX cycles. For example, an LP-WUS PDCCH monitoring cycle may evenly divide the C-DRX cycle. Utilizing the even division may allow, in one or more C-DRX cycles, a UE to perform a radio resource management (RRM) measurement in one or more time durations in which UE does not monitor the PDCCH. For instance, the RRM measurement procedure may be improved by reducing complexity of time durations in which RRM measurement may be performed.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may implement techniques for receiving multiple bits of information via a single wake-up signal (WUS). For example, the UE may receive a configuration indicating a quantity of sequences associated with multiple sequences of a WUS. The UE may receive, while operating in a sleep mode, the WUS that includes multiple sequences, where each sequence is associated with a single bit and the multiple sequences indicate one or more operations. The UE may perform, while operating in the sleep mode, the one or more operations that are indicated by the multiple sequences of the WUS. In some other examples, the UE may implement multiple wake-up radios (WURs), such that the UE may receive multiple WUSs simultaneously. In some aspects, the UE may use the simultaneous WUSs received via the WURs for beam tracking or other operations.

Abstract: Aspects of the disclosure are directed to methods and apparatus for time and frequency synchronization during a low-power wake up signal (LP-WUS) procedure. For example, an LP-WUS procedure may include transmission of signaling modulated via on-off keying (OOK). Such a signal requires less processing relative to an orthogonal frequency division multiplexing (OFDM) modulated signal and can be used to notify a wireless node that the transmitting device has data to transmit to the wireless node via an OFDM transmission. Accordingly, in response to the LP-WUS signal, the wireless node may power-on a main radio capable of receiving and demodulating the OFDM transmission.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may support low-power wake-up signal (LP-WUS) monitoring within a discontinuous reception (DRX) cycle active time in accordance with an LP-WUS monitoring configuration to trigger downlink monitoring. The UE may receive one or more indications of a DRX configuration. The DRX configuration may include an on duration of a DRX cycle and a set of one or more LP-WUS monitoring occasions associated with the DRX cycle. The UE may monitor for LP-WUSs associated with the UE during each of the set of one or more LP-WUS monitoring occasions. Then, the UE may monitor for downlink transmissions in the on duration of the DRX cycle based on whether an LP-WUS was received by the UE in accordance with the monitoring for LP-WUSs.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive configuration information indicating a duration associated with conditional physical control channel monitoring and a set of one or more low-power wake-up signal (LP-WUS) monitoring occasions associated with the duration. The UE may monitor, in accordance with the set of one or more LP-WUS monitoring occasions associated with the duration, for LP-WUSs. The UE may monitor, in the duration, for a physical control channel transmission based on whether an LP-WUS was received by the UE in accordance with the monitoring for the LP-WUSs.

Abstract: Certain aspects of the present disclosure provide techniques for managing cooperative computation and/or communication involving wireless nodes. An example method, performed at a first wireless node, generally includes obtaining signaling associated with coordinated computation involving the first wireless node and a second wireless node, and performing one or more actions based on the signaling.

Abstract: Apparatuses and methods for base station assistance for impairments correction and handling for AF repeaters are described. An apparatus is configured to obtain a first indication of one or more conditions associated with a set of NL characteristics and a set of droop characteristics. The apparatus is also configured to measure the set of NL characteristics and the set of droop characteristics, where the set of NL characteristics and the set of droop characteristics are associated with a DPD training session. The apparatus is also configured to transmit, for a network node, one or more of: (1) a second indication of the measured set of NL characteristics and the measured set of droop characteristics, or (2) at least one of a list of excluded resources or a set of indexes for the list of excluded resources that are associated with interference at the wireless device.

Abstract: The apparatus may be configured to receive a first allocation of UL resources spanning a first range of frequencies, receive a second allocation of DL resources spanning a second range of frequencies, and adjust, based on the DL resources including at least one harmonic frequency resource harmonic to the UL resources, one or more of an UL transmission in the UL resources or a reception of a DL transmission in the DL resources, where the adjusting is associated with one or more of: a DL rate matching around the at least one harmonic frequency resource, an increased DL transmission power of the DL transmission in the at least one harmonic frequency resource, a reduced UL transmission power for the UL transmission associated with the at least one harmonic frequency resource, or a lower order MCS for the DL transmission in the at least one harmonic frequency resource.

Abstract: Method and apparatus for dynamic control of power amplifier back off for repeaters. The apparatus uses a channel model to model a first signal at a channel output. The channel model models a channel between a receiver and a transmitter. The apparatus performs a PAPR reduction on the first signal at the receiver to generate a second signal having a reduced PAPR. The apparatus inputs the second signal through an inverse channel model to generate an output signal. The apparatus outputs the output signal to the receiver, such that the PAPR of the output signal is reduced at an input of the receiver.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may determine channel quality, and may shape frequency domain noise (e.g., crest factor reduction (CFR) related noise) to locations in which channel quality is poor. For example, by shaping channel noise to frequency resources with poor channel quality (e.g., instead of uniformly distributing such channel noise), transmissions may be more reliable, and quality on other frequency resources may be improved (e.g., without negatively impacting the quality of communications via frequency resources that already have a low channel quality), resulting in improved dynamic range of the signal (e.g., peak to average power ratio (PAPR)), which means that power efficiency is improved.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node while monitoring for a wakeup signal from the network node, a set of synchronization signal blocks (SSBs) that are respectively mapped to a set of SSB transmission resources. The UE may transmit, to the network node, a sequence via a resource associated with the set of SSB transmission resources, where the resource may be mapped to an SSB of the set of SSBs associated with a highest signal quality metric associated with the set of SSBs. The UE may receive, from the network node, a feedback communication that indicates successful reception of the sequence and an indication that one or more subsequent downlink transmissions are associated with a transmission configuration indication state associated with the SSB. Numerous other aspects are described.

Abstract: Aspects described herein include devices and methods for facilitating digital predistortion calibration. For example, a communication device can include an antenna array; a plurality of transmit elements; a plurality of receive elements, wherein each receive element is coupled to an associated antenna element of the plurality of antenna elements; and control circuitry, the control circuitry configured to: determine a set of transmit-receive element pairs for online calibration of the communication device, wherein a quantity of transmit elements in the set is less than a quantity of transmit elements in the plurality of transmit elements, and wherein a quantity of receive elements in the set is less than a quantity of receive elements in the plurality of transmit elements; and apply a second calibration setting to the communication device during online operation based on a respective near field measurement of each transmit-receive element pair during the online operation.

Abstract: Methods, systems, and devices for wireless communications are described in which a first user equipment (UE) may relay a wake up signal (WUS) for a second UE. A WUS may be modulated using on-off keying. The first UE may be within the WUS range of the network entity while the second UE may be outside of the WUS range. The network entity may indicate to the first UE to relay WUSs that include the identifier for the second UE. The first UE may receive and relay the WUS intended for the second UE via a lower power transceiver of the first UE. The first UE may relay WUSs while in a reduced power mode. The second UE may receive the relayed WUS via a lower power transceiver of the second UE and may wake a primary transceiver of the second UE in response to the WUS.

Abstract: Certain aspects of the present disclosure provide techniques for channel state feedback via a wake-up receiver. An example method includes obtaining a first configuration that indicates to send a first channel state information (CSI) report based on a first set of parameters associated with a first receiver; obtaining a second configuration that indicates to send a second CSI report based on a second set of parameters associated with a second receiver that includes a wake-up receiver; obtaining first signaling; and sending the second CSI report based on one or more first measurements of the first signaling.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may operate in a discontinuous reception (DRX) mode. The UE may receive control messages indicating reference signal and wakeup signal (WUS) configurations. The reference signal configuration may indicate a reference signal position associated with reference signals and the WUS configuration may indicate a WUS position associated with WUSs and within a time-domain offset of the reference signal position. For example, the WUS position may be directly before or after the reference signal position. The offset may be based on durations associated with the UE transitioning (e.g., ramping up and ramping down) between sleep modes and an awake mode. The reference signal position may be within a DRX cycle period offset in time from the WUS position. The UE may monitor for the WUSs, the reference signals, and in some implementations, data, according to the offset.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, for transmission of an uplink communication, an indication of a first allocation of first resources on a first bandwidth and, for transmission of pilots for interference measurement associated with the uplink communication, an indication of a second allocation of second resources on a second bandwidth. The UE may transmit the uplink communication on the first resources on the first bandwidth and the pilots on the second resources on the second bandwidth, the second bandwidth being different from the first bandwidth. Numerous other aspects are described.

Abstract: A training signal generator for forming an input signal for an ADC-under-test includes a one-bit DAC and an analog low-pass filter. The one-bit DAC converts a binary sequence into a DAC output signal that is then filtered by the analog low-pass filter to form an ADC input signal. The ADC-under-test converts the ADC input signal into an ADC output signal. A digital low-pass filter converts the binary sequence into a plurality of samples. A digital signal processing system processes the plurality of samples and the ADC output signal to form an estimate of the ADC input signal. An ADC linearizer may then be trained to characterize a non-linear impairment of the ADC-under-test responsive to a comparison of the estimate of the ADC input signal and the ADC output signal.