Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) detects a conflict between a first sidelink reference signal transmission from a first sidelink UE and a second sidelink reference signal transmission from a second sidelink UE, wherein the first sidelink reference signal transmission at least partially overlaps with the second sidelink reference signal transmission in at least one time resource, at least one frequency resource, or both, and transmits a collision report to a third sidelink UE, the collision report including at least a collision type indicator indicating whether the first sidelink reference signal transmission and the second sidelink reference signal transmission have the same scrambling identifier.

Abstract: Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, an example of a process for performing sidelink positioning at a user equipment (UE) includes receiving, at the UE, a resource block including a plurality of sidelink symbols in a slot. The slot includes a plurality of slot portions. For instance, a first slot portion of the plurality of slot portions may include at least a first sidelink symbol with at least a first sidelink positioning reference signal (SL-PRS) resource and a second slot portion of the plurality of slot portions may include at least a second sidelink symbol with at least a second SL-PRS resource. The process may further include processing, by the UE, at least one SL-PRS resource in each of the plurality of slot portions of the slot.

Abstract: Disclosed are techniques for environment sensing. In an aspect, a transmitter base station determines a configuration for a radio frequency (RF) sensing signal, the configuration determined based at least in part on coordination among a plurality of base stations, and transmits the RF sensing signal to at least one receiver base station based on the configuration. In an aspect, a receiver base station receives a configuration for an RF sensing signal, the configuration determined based at least in part on coordination among a plurality of base stations, receives, from at least one transmitter base station, the RF sensing signal, and detects at least one target object based, at least in part, on reception of the RF sensing signal.

Abstract: In some implementations, a first user equipment (UE) may send a first message comprising a quality of service (QoS) profile to a second UE. The QoS profile may include a response time requirement for providing positioning information within the positioning session. The first UE may receive a second message from the second UE, the second message comprising an indication of whether the second UE can meet the response time requirement. The first UE may determine resource pool parameters for the positioning session. The resource pool parameters may be based at least in part on the indication of whether the second UE can meet the response time requirement. The first UE may send a third message comprising the resource pool parameters to the second UE.

Abstract: Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a network entity, a positioning reference signal (PRS) configuration indicating one or more PRS resources. The UE determines that one or more transmission properties of the one or more resources should be modified and transmits PRS modification information to the network entity based on the one or more transmission properties of one or more PRS resources to be modified. The network entity may be a location server or location management function. The PRS modification information may include a request to modify the PRS configuration and information indicating a start time, a stop time, a duration, or a combination thereof, associated with modifying the PRS configuration.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a base station may communicate in an unlicensed spectrum (e.g., a shared radio frequency spectrum band). As such, the UE may determine a codebook size for transmitting hybrid access request (HARQ) acknowledgement (ACK) feedback with respect to the unlicensed spectrum. Accordingly, the UE may base the HARQ ACK codebook size on a number of HARQ processes with which the UE has been configured. Additionally or alternatively, the UE may base the HARQ ACK codebook size on a number and/or duration of downlink channel monitoring occasions indicated by the base station. In some cases, the UE may base the HARQ ACK codebook size on a combination of the techniques described herein.

Abstract: Disclosed are techniques for wireless communications. In an aspect, a user equipment (UE) may obtain one or more measurements of one or more Positioning Reference Signal (PRS) resources. The UE may report Time of Arrival (ToA) information for each of the one or more PRS resources to a network entity, wherein the ToA information reported is relative to a reference timing mark.

Abstract: This disclosure provides systems, methods, and devices for wireless communication that supports an assistance indicator, such as a UAI message, that includes position assistance information. In a first aspect, a method of wireless communication includes generating, by a user equipment (UE), an assistance indicator including position assistance information. The method further includes transmitting the assistance indicator to a network entity. Other aspects and features are also claimed and described.

Abstract: A method, apparatus, or computer-readable medium with instructions for beam management for radio frequency (RF) sensing at a wireless device. The wireless device performs a first beamsweep of an RF signal and measures a reflection of the RF signal based on the first beamsweep. The wireless device performs a second beamsweep of the RF signal, wherein the first beamsweep is based on a different parameter than the second beamsweep and measures the reflection of the RF signal based on the second beamsweep. The wireless device selects a beam for RF sensing based on the first beamsweep and the second beamsweep.

Abstract: Methods, systems, and devices for wireless communications are described that asynchronous carrier aggregation, including between high frequency band and lower frequency band transmissions. A user equipment (UE) may be configured to monitor transmissions in a first frequency band and a second frequency band. The UE may measure a timing difference between transmissions in the first frequency band and one or more of the transmissions in the second frequency band, and transmit an indication of the timing difference to a base station. The base station may use the timing difference to determine whether the UE is to use asynchronous carrier aggregation. If the base station determines that the UE is to use asynchronous carrier aggregation, the base station may configure the UE to observe at least a minimum amount of delay when conducting uplink signaling via one of the frequency bands.

Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) receives positioning assistance data from a location server, the positioning assistance data including at least a first expected measurement value and a first expected measurement uncertainty value defining a first search window during which the UE is expected to measure a first plurality of positioning reference signal (PRS) resources transmitted by a first transmission-reception point (TRP), determines a best symbol hypothesis that is common to a first set of PRS resources of the first plurality of PRS resources, wherein the best symbol hypothesis is a symbol within the first search window during which a signal strength of each PRS resource of the first set of PRS resources is maximized, and measures each PRS resource of a second set of PRS resources of the first plurality of PRS resources only during the best symbol hypothesis.

Abstract: Methods, systems, and devices for wireless communications are described. The method may include receiving, from a network node, a configuration for radar waveform reporting, the radar waveform reporting providing object detection for one or more objects within a detectable range, receiving a radar waveform, and transmitting, to the network node according to the received configuration, a radar reporting message including an indication of one or more parameter values associated with the received radar waveform.

Abstract: Disclosed are techniques for wireless signaling. In an aspect, a user equipment (UE) transmits, to a network component, an indication of a capability to estimate a carrier frequency offset (CFO) of the UE associated with radio frequency for sensing (RF-S) operations. In another aspect, the network component estimates the CFO of the UE (e.g., based on measurement information from the UE and/or wireless node(s)). In some designs, the network component further transmits, to the UE, the CFO of the UE (e.g., for CFO compensation associated with RF-S sensing operation(s)).

Abstract: Aspects presented herein may enable a UE to measure a subset of a bandwidth of PRSs, such that the UE may measure the PRSs without retuning bandwidth. In one aspect, a UE measures at least one quality metric associated with one or more channels for one or more PRSs. The UE receives, from a base station, the one or more PRSs via the one or more channels. The UE measures the one or more PRSs using at least one measuring BW of a plurality of measuring BWs, the plurality of measuring BWs being based on at least one of the measured at least one quality metric meeting a quality metric threshold, a BW for the one or more PRSs being greater than or outside of a BW for an ABWP, or a UE system BW being greater than the BW for the one or more PRSs.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a sidelink user equipment (UE) receives, from a first sidelink UE, a first list of a first set of sidelink transmission resources for transmission of sidelink reference signals by the sidelink UE, wherein sidelink transmission resources of the first set of sidelink transmission resources are listed in the first list in a first priority order, and transmits one or more sidelink reference signal resources on at least a subset of the first set of sidelink transmission resources, wherein the subset of the first set of sidelink transmission resources is selected based on the first priority order.

Abstract: Methods, systems, and devices for wireless communications are described. To support communications across a wideband, a base station and user equipment (UE) may communicate across the wideband using a set of sub-bands that span the carrier bandwidth (e.g., the wideband). In some cases, the UE may transmit, to the base station, an indication of a capability of the UE to communicate a wideband communication with the base station via the set of sub-band based communications with the base station. The UE may receive, from the base station (and, in some cases based on the capability of the UE), a configuration for communicating with the base station in the carrier bandwidth using the set of sub-bands. Then, the UE may communicate with the base station in the carrier bandwidth using one or more of the set of sub-bands in accordance with the configuration.

Abstract: Aspects presented herein may enable a network entity to configure a group of UEs to simultaneously transmit reference signals and to simultaneously transmit gradient vectors to the network entity, such that the network entity may receive the gradient vectors from the group of UEs as an aggregated gradient vector over the air. In one aspect, a base transmits, to a group of UEs, a configuration that configures the group of UEs to simultaneously transmit one or more group-common reference signals and to simultaneously transmit one or more gradient vectors associated with a federated learning procedure. The network entity receives, from the group of UEs, the one or more group-common reference signals and the one or more gradient vectors based on the configuration via multiple channels. The network entity calculates an average gradient vector based on the one or more group-common reference signals and the one or more gradient vectors.

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support fifth generation (5G) new radio (NR) radio frequency (RF) sensing with polarization configuration. In a first aspect, a method of wireless communication includes receiving at a network node participating in 5G NR RF sensing a first polarization indicator and a second polarization indicator from a network entity. The first polarization indicator is associated with transmission of a first reference sensing signal and the second polarization indicator is associated with reception of a second reference sensing signal. The network node performs sensing measurements using the first polarization indicator and the second polarization indicator and transmits a sensing measurement report including the sensing measurements associated with the second reference sensing signal to the network entity. Other aspects and features are also claimed and described.

Abstract: A user equipment (UE) is configured for supporting positioning using sounding reference signal (SRS) periodic burst transmissions that includes a plurality of sets of SRS transmissions, where each set of SRS transmissions includes a repetition of SRS resources. The configuration for the SRS periodic burst transmissions includes a start time for the SRS periodic burst transmissions, a repetition configuration for the SRS resources within each set, and a repetition configuration for the plurality of sets of SRS transmissions. The configuration may be received in a Radio Resource Control (RRC) configuration message or a Medium Access Control-Control Element (MAC-CE) message that activates the SRS periodic burst transmissions, and the SRS periodic burst transmissions may be deactivated with a RRC reconfiguration message or another MAC-CE message.

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support enhanced positioning operations using a repeater. In a first aspect, a method of wireless communication includes receiving, by the UE, an instruction from a base station (BS) to perform a first signal measurement at a first time and a second signal measurement at a second time; determining, by the UE and based on the instruction, a first signal characteristic of a first signal during the first time corresponding to a time when a first repeater is repeating the first signal from a base station; determining, by the UE and based on the instruction, a second signal characteristic of a second signal during the second time corresponding to a time when the first repeater is not repeating the second signal; and a location of the UE is determined based on the first signal characteristic and the second signal characteristic.