Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive a first signal from a second wireless device and may identify a first bundle size for a precoding resource group (PRG) based on a characteristic of the first signal and, in some examples, based on performing channel estimation on the first signal. The first wireless device may transmit a feedback message to the second wireless device indicating a second bundle size for the PRG and associated with a second signal based on identifying the first bundle size. In some examples, the first wireless device may receive the second signal on a set of resources in accordance with the second bundle size. The first signal may be an example of a channel state information reference signal (CSI-RS), and the second signal may be an example of a precoded CSI-RS or a demodulation reference signal (DMRS).

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may monitor for one or more downlink transmissions from a base station based at least in part on a grant identifying resources for the one or more downlink transmissions. The UE may determine feedback information for each of the one or more downlink transmissions based at least in part on the monitoring. The UE may identify, based at least in part on the monitoring, one or more duplexing parameters to be requested to the base station for subsequent communications between the UE and the base station, the one or more duplexing parameters pertaining to operation of the UE in at least one of a full duplex communications mode or a half duplex communications mode. The UE may transmit a feedback message indicating the feedback information and the one or more duplexing parameters to the base station.

Abstract: Methods, systems, and devices for wireless communication are described to estimate interference for concurrent uplink and downlink communications based on an indication of one or more one or more characteristics of an interfering uplink signal communicated between a base station and a second user equipment (UE). The base station or the second UE may transmit, to a first UE, an indication of one or more characteristics of an uplink signal, such as a baseband of the uplink signal or one or more parameters of the uplink signal. The first UE may use the characteristic(s) of the uplink signal to estimate the baseband of the uplink signal and cancel interference associated with the uplink signal. For example, the first UE may use the baseband signal to estimate the interference and may subtract the estimated interference from a downlink signal received at the first UE.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques may allow for a victim user equipment (UE) to perform cross-link interference (CLI) measurements in a guard band. The victim UE may receive a resource configuration from a network entity to perform CLI received strength signal indicator (RSSI) measurements in the guard band resources. Additionally, or alternatively, the victim UE may receive a sounding reference signal (SRS) resource configuration from the network entity to perform CLI reference signal received power (RSRP) measurements in the guard band resources. In such examples, the aggressor UE may receive an SRS resource configuration from the network entity for transmitting SRSs to the victim UE in the guard band resources. The control signaling configuring the SRS resources may indicate, to the aggressor UE, a threshold transmit power, a transmit beam restriction, or both, with which to transmit the SRSs.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information that configures one or more sounding reference signal (SRS) resource sets that includes one or more SRS resources associated with a full duplex (FD) set of symbols and one or more SRS resources associated with a non-FD set of symbols. The UE may receive at least one of a radio resource control communication or a downlink control information communication indicating at least one of the one or more SRS resources that are to be used for an uplink transmission repetition. The UE may transmit the uplink transmission repetition in one of: only the FD set of symbols, only the non-FD set of symbols, or both the FD set of symbols and the non-FD set of symbols. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A network node may transmit a message to a user equipment (UE) indicating at least a first frequency range for uplink data and a second frequency range for the uplink data. The UE may apply a frequency offset for at least one of the first frequency range or the second frequency range based at least in part on the first frequency range, the second frequency range, or both, overlapping with a downlink portion of a sub band full duplex duration. The UE may transmit, during a first portion of the sub band full duplex duration, the uplink data in the first frequency range, the second frequency range, or a third frequency range based at least in part on applying the frequency offset for at least one of the first frequency range or the second frequency range.

Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support channel state information (CSI) reporting based on full-duplex reference signals, half-duplex reference signals, or both. A user equipment (UE) may receive, from a network entity, a CSI reporting configuration that includes one or more parameters for full-duplex CSI reporting, half-duplex CSI reporting, or both. The network entity may transmit a full-duplex reference signal, a half-duplex reference signal, or both to the UE based on the CSI reporting parameters. The UE may obtain measurements of the reference signals. The UE may transmit one or more CSI reports based on the measurements. The CSI reports may be transmitted at least a threshold time period after a corresponding reference resource. The threshold time period may be based on a duplexing mode associated with the CSI report.

Abstract: Methods, systems, and devices for wireless communication are described. A wireless communications system may employ subband full-duplex (SBFD). In SBFD resources, a first user equipment (UE) may experience cross link interference (CLI) from a second UE if the second UE transmits using a frequency that is similar to a frequency of the subbands used by the first UE. The network may configure a CLI measurement resource in an SBFD time resource and may indicate in which subbands to measure CLI. The network may also indicate the reporting quantities (e.g., whether to report CLI measurement information per subband or combined per communication direction). CLI measurements may be generated in a subband manner. A CLI measurement for a CLI subband that overlaps with different subbands may be generated for the uplink subband only, may be generated for both the uplink subband and the guard band, or may be skipped.

Abstract: Methods, systems, and devices for wireless communications are described. A UE may receive a set of reference signals from a network entity in accordance with a resource configuration. The set of reference signals may be received via non-full-duplex communication resources. Based on measuring the set of reference signals, the UE may transmit one or more channel state information (CSI) reports to the network entity in accordance with a first set of antenna ports and a second set of antenna ports. The first set of antenna ports may be selected by the UE based at least in part on the resource configuration, and the second set of antenna ports may be active antenna ports in full-duplex communication resources. The one or more CSI reports may include information associated with the first set of antenna ports.

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the techniques described herein may enable joint reporting of channel state information (CSI) and cross-link interference (CLI). For example, a network entity may transmit, to a user equipment (UE), a joint configuration indicative of a first set of resources associated with generation of one or more CSI metrics and a second set of resources associated with generation of one or more CLI metrics. As such, the UE may generate the one or more CSI metrics and one or more CLI metrics in accordance with the joint configuration and transmit a joint report indicative of the one or more CSI metrics and the one or more CLI metrics.

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may transmit, to a second wireless device, a message indicating a capability of the first wireless device to support full-duplex line-of-sight (LOS) multiple-input multiple-output (MIMO) communications. The first wireless device may receive, from the second wireless device, control signaling indicating an uplink channel resource allocated for one or more uplink communications, a downlink channel resource allocated for one or more downlink communications, a first set of LOS MIMO transmission modes for the one or more uplink communications, and a second set of LOS MIMO transmission modes for the one or more downlink communications. The uplink channel resource may at least partially overlap with the downlink channel resource in time, frequency, or both. The first wireless device may communicate the one or more uplink communications and the one or more downlink communications based on the control signaling.

Abstract: A method may include transporting a water stream comprising water and a biocide from an upstream location to a downstream location, withdrawing a sample of the water stream to a sample collection and analyses system, preconditioning the sample, injecting the preconditioned sample into an online gas chromatography analyzer, measuring a concentration of the biocide in the sample via the online gas chromatography analyzer to obtain a measurement result, transmitting the measurement result to a control system, and adjusting by the control system, automatically injecting biocide into the water stream at the upstream location based on the biocide dosage requirement on either a batch, or semi-batch, or a continuous basis. A system for measuring and controlling biocide concentration in a water stream in a pipeline may include a sample probe, a cabinet heater, a filtering unit, an online gas chromatography analyzer, a control system, and an injection system.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a control message that indicates a first resource for a first channel state information (CSI) reference signal (CSI-RS) and a second resource for a second CSI-RS, where the first resource may be associated with first CSI for half-duplex operations and the second resource may be associated with second CSI for full-duplex operations. The UE may receive at least one of the first CSI-RS or the second CSI-RS and measure at least one of the first CSI-RS or the second CSI-RS to obtain first CSI for the half-duplex operations and second CSI for the full-duplex operations. In response to obtaining the first CSI and the second CSI, the UE may transmit at least one measurement report that includes the first CSI and the second CSI.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a control message indicating a channel state information (CSI) reporting configuration for a subband full-duplex (SBFD) slot. The CSI reporting configuration may indicate that the UE is to report CSI for entire bandwidths of respective downlink subbands of the SBFD slot. That is, the CSI reporting configuration may configure the UE for per-downlink subband CSI reporting. The UE may receive CSI reference signals via the downlink subbands, and measure CSI for the reference signals. The UE may transmit, according to the CSI reporting configuration, a CSI report indicating the CSI for the downlink subbands. In some examples, the CSI may include some combination of channel quality indicators (CQIs) and precoding matrix indicators (PMIs).

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information identifying a reporting resource for channel state information (CSI) reporting, the reporting resource being for a CSI report of a sub-band full-duplex (SBFD) resource or a non-SBFD resource. The UE may transmit the CSI report using the reporting resource, the CSI report conveying information regarding the SBPD resource or the non-SBFD resource. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of dynamic resource block (RB) bundling for downlink transmissions, the dynamic RB bundling associated with a first precoding bundle size set and a second precoding bundle size set. The UE may receive a grant scheduling a downlink transmission associated with a subband full duplex slot, the grant comprising a bundling size indication identifying either the first precoding bundle size set or the second precoding bundle size set. The UE may receive the downlink transmission associated with the subband full duplex slot according to the grant, the downlink transmission received via contiguous frequency resources associated with RB bundling and identified based at least in part on an RB size identified by the bundling size indication, wherein the RB size comprises a narrowband bundle size value, a wideband bundle size value, or a combination thereof.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitted may use a closed loop precoder for line-of-sight (LOS) multiple-input multiple-output (MIMO) communications that uses information such as distance feedback or LOS MIMO channel state feedback. A closed loop precoder may be associated with less overhead than a precoder based on full channel knowledge, such as an SVD precoder. A receiver may estimate a channel based on channel state information reference signals transmitted by the transmitter and calculate a spectral efficiency for one or more precoders of a set of precoders associated with the channel for a LOS MIMO mode. The receiver may send feedback to the transmitter that indicates a selected precoder of the set of LOS MIMO precoders based on the calculated spectral efficiencies. The transmitter may precode messages using the reported closed loop precoder.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration, from a network, associated with a downlink transmission in one or more subband full duplex (SBFD) symbols. Accordingly, the UE may selectively transmit an uplink transmission in the one or more SBFD symbols based at least in part on the configuration. Additionally, or alternatively, the UE may receive a configuration, from the network, associated with a random access channel occasion in one or more SBFD symbols. Accordingly, the UE may selectively receive a downlink transmission in the one or more SBFD symbols based at least in part on the configuration. 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 indicating one or more channel state information (CSI) report configurations that configure one or more CSI interference measurement (CSI-IM) resources, including a CSI-IM resource associated with a full-duplex (FD) set of symbols and a CSI-IM resource associated with a half-duplex (HD) set of symbols. The UE may perform interference measurements associated with at least one of the FD set of symbols, using the CSI-IM resource associated with the FD set of symbols, or the HD set of symbols, using the CSI-IM resource associated with the HD set of symbols. The UE may transmit one or more CSI reports reporting the interference measurements associated with the at least one of the FD set of symbols or the HD set of symbols. 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 a configuration for a resource associated with cross-link interference (CLI). The resource is associated with subband full duplex and is non-contiguous in frequency. The UE may receive a configuration for a report associated with the resource. The UE may perform a measurement using the resource associated with CLI. The UE may transmit a report associated with the measurement. Numerous other aspects are described.