Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) that includes an indication of a null resource element pattern. The null resource element pattern may be indicated in the DCI using: a value of an antenna port field that also indicates one or more demodulation reference signal (DMRS) ports for the UE and a number of DMRS code-division multiplexing groups without data, or one or more zero power downlink reference signals. The UE may perform one or more demodulation interference measurements based at least in part on the null resource element pattern. The UE may demodulate a downlink communication based at least in part on performing the one or more demodulation interference measurements. Numerous other aspects are provided.

Abstract: Wireless communication devices, systems, and methods related to mechanisms to implement improved interference tracking over time. A BS may transmit information to a UE that allows the UE to quantize channel measurements into interference states. The UE may transmit an interference change report as triggered by an event, such as an interference metric exceeding a threshold after quantizing into the interference states. This enables the system to capture and respond to abrupt changes. Further, the interference change report may include historic interference information. The UE may include statistics based on the historic interference information. The UE may further be triggered to transmit an interference change report in response to a BS requesting it, or in response to a configured period of time elapsing. The UE may further include MCS information predicted for one or more future time periods based on historic information, which the BS may use in scheduling.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) supporting full duplex communications may determine that a set of downlink messages to be transmitted from a base station to the UE overlaps in time with a set of uplink messages to be transmitted from the UE. Accordingly, the UE may determine a downlink transmission power adjustment value for the set of downlink messages. In some examples, the base station may indicate the downlink transmission power adjustment value to the UE via radio resource control (RRC) signaling, a downlink control information (DCI) message, or both. The UE may transmit the set of uplink messages while simultaneously receiving the set of downlink messages with a transmission power that corresponds to the downlink transmission power adjustment value. Adjusting the transmission power for the set of downlink messages may reduce self-interference at the UE, the base station, or both.

Abstract: Aspects presented herein may enhance a HARQ feedback operation to improve data retransmissions by using tri-state HARQ feedback, and may enable a UE to construct a codebook for tri-state HARQ feedback. In one aspect, a UE determines whether tri-state HARQ feedback or bi-state HARQ feedback is configured based on a DL carrier. The UE generates HARQ feedback for at least one of a received PDCCH or a received PDSCH on the DL carrier based on the determination whether the DL carrier is configured with the tri-state HARQ feedback. The UE transmits the generated HARQ feedback.

Abstract: Apparatus, methods, and computer-readable media for facilitating serving aperiodic traffic over sidelink using resource adaptation of periodic resource reservations are disclosed herein. An example method for wireless communication at a first device includes reserving periodic resources for sidelink transmission. The example method also includes modifying the reserved periodic resources within a period based on a traffic load for the period. The example method also includes transmitting sidelink communication in the period based on the modified periodic resources. Another example method of wireless communication at a wireless device includes receiving a periodic resource reservation for sidelink transmission. The example method also includes receiving a modification of the periodic resource reservation for a period. Further, the example method includes transmitting or receiving sidelink communication in the period based on a modified periodic resource.

Abstract: Methods, systems, and devices for wireless communications are described. For example, an operator may utilize the duplexing gap as a second downlink channel for an operator that has an uplink channel next to the guard. an operator may utilize the duplexing gap as a second uplink channel for an operator that has a downlink channel next to the guard. In some examples, a new block may be added for an operator (e.g., the first operator, the second operator, or a third and distinct operator). The new block may include an uplink channel and a downlink channel (which are adjacent to respective uplink and downlink channels for other operators, hence avoiding additional interference). A new block may be added for an operator (e.g., the first operator, the second operator, or a third and distinct operator), which may be subdivided in time, frequency, or both.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify one or more antenna groups at the UE, each of the one or more antenna groups comprising two or more antenna ports and associated with group-based sounding reference signal transmission. The UE may receive an indication of a sounding reference signal configuration identifying one or more resources for performing group-based sounding reference signal transmissions using at least one of the one or more antenna groups. The UE may transmit one or more sounding reference signals using the one or more resources and at least one antenna port from the at least one of the one or more antenna groups.

Abstract: Aspects of the present disclosure provide a self-contained subframe structure for time division duplex (TDD) carriers. Information transmitted on a TDD carrier may be grouped into subframes, and each subframe can provide communications in both directions (e.g., uplink and downlink) to enable such communications without needing further information in another subframe. In one aspect of the disclosure, a single subframe may include scheduling information, data transmission corresponding to the scheduling information, and acknowledgment packets corresponding to the data transmission. Furthermore, the subframe may additionally include a header and/or a trailer to provide certain bi-directional communications functions.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a physical uplink shared channel communication using a resource associated with a configured grant. The UE may transmit, in connection with transmitting the physical uplink shared channel communication, a scheduling request. A base station (BS) may monitor for the physical uplink shared channel communication and the scheduling request. The BS may selectively communicate with the UE to schedule a retransmission of the physical uplink shared channel communication based at least in part on a result of the monitoring. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A configuration for a reference signal used to determine a non-linear behavior of transmission components at a transmitting device may be determined. The configuration for the reference signal may be determined based on signaling transmitted by the transmitting device, signaling transmitted by a device that receives the reference signal, or both. Additionally, or alternatively, the configuration for the reference signal may be determined based on a configuration of other signals transmitted by the transmitting device prior to or concurrently with the transmission of the reference signal. The determined configuration may be used to generate and transmit the reference signal or to determine a configuration of a received reference signal. In both cases, a non-linear response of transmission components at the transmitting device may be determined based on the reference signal.

Abstract: Methods and apparatuses for wireless communication for line-of-sight Multiple-Input-Multiple-Output (LOS MIMO) are described. A first pilot signal is transmitted to a second device. The first pilot signal is at least one of a constant phase pilot or a linear phase ramped pilot for estimating a misalignment of a second antenna array of the second device with respect to a first antenna array of the first device.

Abstract: Certain aspects of the present disclosure provide techniques for configuring a reconfigurable intelligent surface (RIS) for wireless communication. A method that may be performed by a base station (BS) includes transmitting one or more parameters corresponding to a time period for the RIS to adapt to user equipment (UE) configuration information, the UE configuration information for configuring the RIS for RIS-assisted communication between the BS and a UE, the one or more parameters comprising a number of symbols indicative of a duration of time. The method also includes transmitting, via the RIS and separately from transmitting the one or more parameters, a control channel to the UE scheduling communication of a data channel with the UE via the RIS. The method also includes communicating, via the RIS, the data channel with the UE the duration of time after transmitting the control channel to the UE.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques support decoupled uplink and downlink communications via reconfigurable intelligent surfaces. Generally, the described techniques provide for using different passive network nodes for uplink and downlink communications. A user equipment (UE) may receive, from a base station, an indication of a first transmission configuration indicator state for downlink communications with the base station and a second transmission configuration indicator state for uplink communications with the base station. The UE may receive, from the base station via a first passive device (e.g., a first reconfigurable intelligent surface (RIS)) associated with the first transmission configuration indicator state, a downlink message in a radio frame. The UE may transmit, to the base station via a second passive device (e.g.

Abstract: A method, apparatus, and system for barring at least one UE from communicating with one or more RISs is disclosed. A base station may determine to bar at least one UE from communicating with one or more RISs of a plurality of RISs. The base station may transmit, to the at least one UE, a barring indication for the one or more RISs. The barring indication may identify the one or more RISs with which the at least one UE is barred from communicating. The UE may determine to refrain from communicating with the one or more RISs based on the barring indication. The UE may communicate with the base station based on the determination to refrain from communicating with the one or more RISs.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a method of wireless communication performed by a transmission/reception point (TRP) includes transmitting, at a first time and to a receiving entity, a first beam response report that describes, using a first level of granularity, beam responses of a set of positioning resources, each positioning resource to be transmitted by the TRP at different times using different beams; transmitting, at a second time and to the receiving entity, a second beam response report that describes, using a second level of granularity different from the first level of granularity, beam responses of at least a portion of the set of positioning resources; and transmitting the set of positioning resources using the different beams. The TRP may receive positioning information from the receiving entity, the positioning information comprising measurements of at least some of the positioning resources, a positioning estimate, or combinations thereof.

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, an indication of at least one of a configured grant or a semi-persistent scheduling (SPS) configuration. The UE may transmit or receive, based at least in part on a modification to the at least one of the configured grant or the SPS configuration, wherein the modification is based at least in part on a change from a first time domain pattern to a second time domain pattern. The UE may receive and indication of the modification from the base station. Additionally, or alternatively, the UE may determine the medication based at least in part on at least one rule stored in a memory of the UE. Numerous other aspects are described.

Abstract: Wireless communications systems and methods related to negative acknowledgement (NACK)-triggered sounding reference signal transmissions are provided. In some aspects, a user equipment may detect an error when decoding a data transmission received from a base station via a bandwidth part. The UE may then trigger, in response to detecting the error, a transmission to the BS of a first sounding resource signal using a first SRS resource set of the bandwidth part.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a collision between an access link communication and a sidelink communication. The UE may resolve the conflict based at least in part on a priority associated with the access link communication and a priority associated with the sidelink communication. Numerous other aspects are provided.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a relay user equipment (UE) receives, from a base station, a set of one or more resource pool for positioning (RPP) configurations, each RPP configuration defining one or more RPPs for use by remote UEs served by the relay UE, each RPP comprising resources for positioning, which may include for sidelink positioning. The relay UE assigns, to each of one or more remote UEs, an RPP or a portion thereof according to the RPP configuration. In some aspects, the assignments are orthogonal in time, frequency, or both, to reduce interference between remote UEs during sidelink positioning. In some aspects, the relay UE receives the RPP configuration(s) in response to sending a request for same to the base station, which the relay UE may send in response to receiving a request for positioning resources from one or more of the remote UEs.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit, and a user equipment (UE) may receive, information that configures a periodic bandwidth part (BWP) switching pattern that indicates a sequence of BWPs, wherein each BWP in the sequence of BWPs is associated with a respective network state. The UE and the network node may communicate according to the periodic BWP switching pattern, wherein the UE and the network node may communicate by sequentially switching among the BWPs in the sequence of BWPs indicated in the periodic BWP switching pattern, wherein each BWP in the sequence of BWPs is associated with a configuration corresponding to the respective network state associated with the BWP. Numerous other aspects are provided.