Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a first set of sidelink feedback messages to transmit and a second set of sidelink feedback messages to receive, the first set of sidelink feedback messages scheduled to be transmitted concurrently with the second set of sidelink feedback messages. The UE may select a first subset of sidelink feedback messages from the first set of sidelink feedback messages to transmit and a second subset of sidelink feedback messages from the second set of sidelink feedback messages to receive based at least in part on a priority level associated with each sidelink feedback message and a first set of frequency domain resources for the first subset of sidelink feedback messages and a second set of frequency domain resources for the second subset of sidelink feedback messages.

Abstract: Techniques are disclosed for enabling low-power positioning of a first mobile device using differential angle of arrival (AoA). A differential AoA between a first AoA of a first wireless reference signal at a second mobile device and a second AoA of a second wireless reference signal at the second mobile device is obtained, where the first wireless reference signal is transmitted by a wireless network node, and the second wireless reference signal is transmitted by the first mobile device. The position of the first mobile device is determined based at least in part on the differential AoA. The position of the first mobile device is then provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may receive, from a second UE, a physical sidelink shared channel (PSSCH) transmission in an uplink slot or in a smaller-bandwidth slot. The UE may transmit, to the second UE and based at least in part on the PSSCH transmission, hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback in a physical sidelink feedback channel (PSFCH) resource of the uplink slot or of the smaller-bandwidth slot based at least in part on a PSSCH-to-PSFCH mapping, wherein a quantity of PSFCH resources differs between the uplink slot and the smaller-bandwidth slot based at least in part on different resource pool bandwidths between the uplink slot and the smaller-bandwidth slot. Numerous other aspects are described.

Abstract: Techniques are provided for configuring on-demand positioning reference signal (PRS) resources in double difference (DD) positioning methods. An example method for providing an on-demand positioning reference signal request includes receiving a plurality of positioning reference signal measurement values from a target user equipment and at least one reference node, determining one or more on-demand positioning reference signals based at least in part on signal identification information associated with each of the plurality of positioning reference signal measurement values, and sending an indication of the one or more on-demand positioning reference signals to either of the target user equipment, the at least one reference node, or both.

Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) receives a request location information message from the network entity, the request location information message including one or more start measurement time parameters indicating a start time of a measurement period during which the UE is expected to perform one or more positioning measurements, and performs the one or more positioning measurements of one or more positioning reference signal (PRS) resources on a first positioning frequency layer during the measurement period, wherein a start of the measurement period is based on the one or more PRS resources, a reception time, and the one or more start measurement time parameters.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a sidelink resource reservation, wherein the sidelink resource reservation indicates a first resource in an uplink slot with a first bandwidth available for the sidelink resource reservation and a second resource in a sub-band full duplex (SBFD) slot with a second bandwidth available for the sidelink resource reservation, and wherein the sidelink resource reservation uses a same sub-channel indexing configuration for the uplink slot and the SBFD slot. The UE may transmit a communication using the sidelink resource reservation. Numerous other aspects are described.

Abstract: Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) may determine that the UE is or will be at a location within a calibration region. The UE may report, to a network entity, location information, the location information being associated with the location within the calibration region. In an aspect, a network entity may obtain calibration error information associated with a user equipment (UE) and a calibration region. The network entity may send the calibration error information to the UE, to a base station, or to combinations thereof.

Abstract: Disclosed are techniques for muting positioning reference signals. In aspects, a location server sends, to a user equipment (UE), a plurality of positioning reference signal configurations and one or more positioning reference signal muting configurations associated with a transmission-reception point (TRP) identifier (ID) and/or a positioning reference signal ID.

Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may receive positioning assistance data for a plurality of cells, the positioning assistance data including at least a first positioning reference signal (PRS) configuration for a first cell of the plurality of cells and a second PRS configuration for a second cell of the plurality of cells. The UE may perform a handover from the first cell to the second cell during a positioning session with at least the first cell and the second cell. The UE may, after the handover, measure PRS from the second cell based on the second PRS configuration.

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, multiple time domain pattern candidates. The UE may communicate with the base station via a time domain pattern selected from among the multiple time domain pattern candidates. 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, from a base station, an indication to switch from a first time domain pattern to a second time domain pattern. The UE may switch to the second time domain pattern a switching time duration after receiving the indication. The UE may communicate with the base station according to the second time domain pattern. Numerous other aspects are described.

Abstract: In an aspect, a BS transmits, to a UE, a time-varying RS-P configuration (e.g., for DL-PRS or SRS-P, such as UL-SRS-P or SL-SRS-P) that comprises a first RS-P configuration associated with a first time period and a second RS-P configuration associated with a second time period. In another aspect, a BS transmits, to a UE, a varying SRS-P configuration that comprises a first SRS-P configuration, a second SRS-P configuration, and at least one event-triggering condition for transitioning between the first and second SRS-P configurations. The UE transmits SRS-P or receives and measures DL-PRS in accordance with the time-varying RS-P configuration or the varying SRS-P configuration.

Abstract: Aspects relate to sidelink channel tracking using quasi co-location (QCL) information for a sidelink channel between wireless communication devices (e.g., UEs). A transmitting UE may identify the QCL information for a sidelink transmission to a receiving UE over the sidelink channel and transmit an indication of the QCL information to the receiving UE. The indication of the QCL information may be representative of one or more large-scale channel properties (LSCPs) associated with the sidelink transmission. The receiving UE may then process the sidelink transmission based on the one or more LSCPs.

Abstract: In an embodiment, a wireless node (e.g., UE or BS) receives from a network component (e.g., BS or core network component) a request for a positioning estimate of a UE associated with a specified time. The wireless node performs positioning measurements at a plurality of times, and determines (e.g., via interpolation or extrapolation) the positioning estimate associated with the specified time based on the positioning measurements. The wireless node transmits, to the network component, a report comprising the determined positioning estimate.

Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) performs at least one positioning procedure with at least one transmission-reception point (TRP), and transmits a positioning report for the at least one positioning procedure via first low layer signaling or both the first low layer signaling and second signaling different than the first low layer signaling.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to estimate a signal-to-noise ratio for each antenna port associated with a reception of one or more tracking reference signals. The UE may receive one or more of multiple single-port tracking reference signals, a single multi-port tracking reference signal, or a tracking reference signal associated with multiple power ratios. The UE may be able to estimate a channel upon receiving a demodulation reference signal. The channel estimation may be based on the reception of one or more of multiple single-port tracking reference signals, the single multi-port tracking reference signal, or the tracking reference signal associated with multiple power ratios. The UE may communicate with the base station based on estimating the channel.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a UE capability message, the UE capability message indicating a supported transmit antenna switching (TxAS) capability for each port of the UE. The UE may receive a configuration message indicating an uplink multiple-input/multiple-output (UL MIMO) configuration for the UE, the UL MIMO configuration being based at least in part on the UE capability message. The UE may identify, based at least in part on the configuration message, a sounding reference signal (SRS) configuration to use for transmitting SRSs in conjunction with the UL MIMO communications, the SRS configuration comprising a configuration for transmission by the UE of SRSs using at least one of the two or more ports of the UE, the SRSs transmitted on one or more antennas of the UE selected according to a TxAS configuration for the respective port.

Abstract: Information inherently conveyed in the hierarchical structure of a positioning frequency layer is leveraged to determine a sequence identifier unique to each Positioning Reference Signal (PRS) resource of a sequence of PRS resources used in a positioning session of a user equipment (UE). This unique sequence number can then be used in the reporting of measurement data by the UE or other reporting device to a location server. As such, embodiments herein effectively provide means for compressing identification information included in position measurement reporting to the location server.

Abstract: Disclosed are systems, methods, and non-transitory media for improving user equipment (UE) positioning. In some aspects, UE positioning improvements are facilitated by a location server, such as a Location Management Function (LMF) that receives location measurements from the UE and transmits back a feedback messaging, that can be used to modify transmission of subsequent location measurements to the location server.

Abstract: Techniques for determining reconfigurable intelligent surface (RIS) operation for RIS-assisted position determination of a mobile device in a wireless communications system, according to this disclosure, may comprise determining, for one or more RISs, whether the mobile device is within a near-field operational distance of the RIS based at least in part on a determined near-field operational distance of the RIS, and a relative distance between the mobile device and the RIS. Techniques may also comprise determining an RIS-assisted position of the mobile device based on measurements made by the mobile device of radio frequency (RF) signals reflected from at least one RIS of the one or more RISs. Techniques may also comprise providing the determined RIS-assisted position of the mobile device.