Abstract: Methods, systems, and devices for codebook-based beamforming considerations for reconfigurable intelligent surfaces (RISs) are described. For example, an RIS may transmit, to a first wireless device, an indication of a capability of using different types of precoders for generating a codebook for the RIS for redirecting wireless signals. The codebook may include codewords associated with weights for respective elements of the RIS. In some cases, the RIS may receive, from the first wireless device, a type of precoder for generating the codebook. As such, the RIS may adjust one or more elements using the weights for the respective elements based on receiving the indication and in accordance with training a communication link between the first wireless device and a second wireless device via the plurality of elements. In some examples, the RIS may receive, from the first wireless device, an index corresponding to a codeword.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a first physical downlink shared channel (PDSCH) transmission transmitted using a first modulation and coding scheme (MCS). The UE may transmit, to the base station, feedback based at least in part on decoding the first PDSCH transmission, wherein the feedback includes an acknowledgement (ACK) or negative acknowledgement (NACK) and a channel state information (CSI) report that includes at least an indication of a second MCS based at least in part on a target block error rate (BLER) and a target charging rate for energy harvesting. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure provide techniques for repetition cancellation in full duplex communications.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting user equipment (UE) or a receiving UE may receive a message indicating a set of formats for a sidelink feedback channel. The transmitting UE may transmit a sidelink control message and a sidelink data message to the receiving UE, and the receiving UE may generate feedback for the sidelink data message. The receiving UE may transmit, to the transmitting UE, a sidelink feedback message including the feedback using a set of resources of the sidelink feedback channel based on a format of the set of formats. The format may correspond to a time domain configuration, a frequency domain configuration, or both, that indicates the set of resources. In some examples, the receiving UE may receive (e.g., from the base station or the transmitting UE an indication of a format to use for the feedback message.

Abstract: Methods, systems, and devices for wireless communications are described for relaying communications from a source device to a destination device via one or more relay devices. Scheduled resource grants may be used to provide resources for the relayed communications, and may provide one or more associated relaying parameters for relayed communications. A source device and relay device may use parameters to determine a relaying priority for multiple communications that are to be relayed. Additionally or alternatively, scheduled resource grants may include energy harvesting (EH) parameters for communications that use the scheduled resources. The EH parameters may include, for example, time-switching energy harvesting parameters that configure a first subset of symbols for data and a second subset of symbols for EH, or power-splitting EH where power of a received signal is split between EH components and decoding components.

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, the method may include a user equipment (UE) transmitting, to a base station, first reference signals. The base station may perform channel estimation using the first reference signals and estimate a value for an uplink channel based on the channel estimation. The base station may generate second reference signals such that a characteristic of a downlink channel seen by the UE is within a target value and transmit the second reference signals to the UE. The UE may estimate a value for the characteristic of the downlink channel and obtain the target value from the estimated value. Both the UE and the base station may generate a secret using the target value and utilize the secret key for physical layer protection.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first device may generate a request for energy from a second device that is capable of charging the first device in association with energy harvesting. The first device may generate an indication that indicates a maximum duration for which the request applies. The first device may transmit the request and the indication to the second device. Numerous other aspects are described.

Abstract: Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a user equipment (UE) may include harvesting energy from an ambient environment associated with the UE and transmitting, to a base station (BS), a communication associated with a communication opportunity, wherein the communication opportunity is based on parameters associated with the harvesting of the energy from the ambient environment.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication associated with Type B physical uplink channel repetitions of a transport block. The UE may transmit the repetitions of the transport block, including a first smaller repetition of the repetitions that has a first payload size that is smaller than a nominal payload size for the repetitions and that includes a first self-decodable data portion of the transport block. Numerous other aspects are described.

Abstract: Certain aspects of the present disclosure provide techniques for skipping or using actual repetitions. A method that may be performed by a user equipment (UE) includes receiving, from a base station, a configuration indicating resources for a first repetition and a second repetition in a physical uplink control channel (PUCCH). In certain aspects, the method may also include transmitting the first repetition, wherein the first repetition includes a larger symbol length than the second repetition, the resources for the first repetition multiplex a plurality of transmissions from first UEs including the UE, the resources for the second repetition multiplex a plurality of transmissions from second UEs, and a quantity of the first UEs is larger than a quantity of the second UEs.

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device, such as a reconfigurable intelligent surface (RIS), or some other relaying device, may receive a first indication of a set of zones (e. g., locations) to which the first wireless device is configured to relay one or more messages. The first device may receive a second indication of a set of beams of the first wireless device associated with a corresponding zone of the set of zones. The set of beams may be configured to serve the corresponding zone. The first wireless device may relay communications to the corresponding zone using at least one beam of the set of beams based on the communications being for the corresponding zone or for a second wireless device located in the corresponding zone.

Abstract: This disclosure provides methods, devices and systems for communicating with an energy harvesting (EH) user equipment (UE). The EH UE may have limited power available for communications depending on an energy mode of the EH UE. The EH UE transmits an indication of an EH communication parameter to a scheduling device. The EH communication parameter may be a maximum time-frequency resource size for one or more physical channels during a time period based on an energy mode of the UE for the time period. The scheduling device schedules the UE transmit or receive a signal satisfying the maximum time-frequency resource size on the one or more physical channels. In some implementations, the scheduling device or another network device may provide radio frequency energy that the EH UE may harvest to power the EH UE for the communications.

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communication systems, for example those supporting accumulated feedback, a user equipment (UE) may receive an indication of a plurality of accumulated feedback events that are each representative of different feedback combinations for reporting accumulated feedback for a set of scheduled downlink occasions and may determining the accumulated feedback for the set of scheduled downlink occasions. The UE may select, from the plurality of accumulated feedback events, a representative event based on the accumulated feedback and may transmit an uplink control message indicative of the representative event. In some examples, transmitting the uplink control message may include identifying a Huffman code for the representative event and transmitting the Huffman code via one or more stages of the uplink control message.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, over an access link, first control signaling indicating a correspondence between network operation states of a network and sidelink power control modes of the UE for sidelink communications. The UE may switch from a first sidelink power control mode to a second sidelink power control mode based on a change in a network operation state by the first network entity from a first network operation state to a second network operation state, where the second sidelink power control mode may correspond to the second network operation state. The UE may communicate one or more sidelink messages with the second wireless device, a programmable logic controller, or both over a sidelink channel in accordance with the second sidelink power control mode.

Abstract: Disclosed are techniques for radio frequency energy harvesting (RF-EH). In an aspect, a communications device determines a set of resources associated with a data communication from a first device to a second device, and transmits, to at least a first user equipment (UE), an indication of the set of resources for radio frequency energy harvesting (RF-EH), wherein the first device and the second device are separate from the first UE. In a further aspect, the first UE receives an indication of a set of resources associated with a data communication from a first device to a second device, wherein the first device and the second device are separate from the first UE, and performs RF-EH on at least part of the set of resources.

Abstract: Techniques are provided for aligning radio frequency (RF) sensing operations with base station discontinuous reception (DRX) and discontinuous transmission (DTX) cycles. An example method for performing RF sensing operations with a wireless node according to the disclosure includes receiving discontinuous reception or discontinuous transmission information for the wireless node, determining one or more on periods and one or more off periods based on the discontinuous reception or the discontinuous transmission information, performing radio frequency sensing operations with the wireless node during the one or more on periods, and ceasing radio frequency sensing operations with the wireless node during the one or more off periods.

Abstract: The apparatus may be a wireless device configured to receive, via a frequency resource common to a plurality of wireless devices including the first wireless device, a common dynamic indication indicating at least a DCI monitoring behavior for the plurality of wireless devices and monitor, based on the indicated DCI monitoring behavior, for a DCI via the frequency resource common to the plurality of wireless devices. The apparatus may be a network node configured to output a common dynamic indication indicating at least a DCI monitoring behavior for transmission to a plurality of wireless devices via a frequency resource common to the plurality of wireless devices and output, based on the indicated DCI monitoring behavior, a DCI for transmission via the frequency resource common to the plurality of wireless devices.

Abstract: Disclosed are techniques for wireless communication. In an aspect, one or more slots in a set of DMRS-bundled slots are excluded from a DMRS-sharing power control configuration based on duplex-type. In another aspect, a fixed transmission power level for a DMRS-sharing power control configuration is based at least in part upon a duplex configuration of DMRS-bundled slots.

Abstract: Aspects are provided for switching flexible bandwidth parts (BWPs) according to one or more communication metrics or power metrics of one or more of a user equipment (UE) or a base station. In certain aspects, the UE may be configured to receive, from a base station, a command to switch from a first bandwidth part (BWP), wherein the first BWP is associated with a first bandwidth and a first slot format dedicated for the first BWP. In certain aspects, the UE may be configured to switch from the first BWP to a second BWP, wherein: the first bandwidth is switched to a second bandwidth, the first slot format is switched to a second slot format, or the first bandwidth is switched to the second bandwidth and the first slot format is switched to the second slot format.

Abstract: A user equipment (UE) receives positioning assistance data including one or more Positioning Reference Signal (PRS) resources, PRS resource sets, and TRPs, and information related to one or more Reflection Objects (ROs), such as Reconfiguration Intelligent Surfaces (RISs). A prioritization of PRS signals and/or ROs for measurement and/or reporting is based at least on the information for the one or more ROs. For example, prioritization may be determined based on whether an RO is reflecting PRS signals that will enhance positioning performance for the UE. Accuracy requirements for positioning or measurement may similarly be determined based at least in part on associate of the RO with PRS resources. Measurement of the PRS signals and/or reporting of the measurements is performed based on the prioritization of the PRS signals and/or ROs.