Abstract: A mobile device is disclosed. The mobile device may receive, from a network node, information indicative of a predetermined time delay to be utilized in connection with an RF sensing procedure utilizing uplink (UL) and downlink (DL) signals. The mobile device may receive an RF sensing reference signal (RS) transmitted by a base station. Responsive to the predetermined time delay elapsing, the mobile device may transmit a corresponding RF sensing RS at a time corresponding to the predetermined time delay after a time at which the RF sensing RS was received, wherein a time at which the corresponding RF sensing RS is received and the predetermined time delay are usable to determine positioning information of the mobile device.

Abstract: Disclosed are systems and techniques for providing a phase continuity configuration in cross-link interference (CLI) based sensing. For instance, a method for wireless communications at a user equipment (UE) may include receiving, at the UE, a phase reporting configuration from a network entity. The method may include generating, at the UE based on the phase reporting configuration, a phase report comprising one or more phase measurements of a cross-link interference (CLI)-based sensing resource. The method may further include transmitting, to the network entity, the phase report comprising the one or more phase measurements of the CLI-based sensing resource.

Abstract: Disclosed are systems and techniques for efficient joint communications and radio frequency (RF) sensing. For example, a method for communications and sensing can include receiving, by a receiver, a first signal based on a reflection of a second signal from a target, wherein the first signal comprises a waveform including a plurality of communications instances and a plurality of sensing instances. The method can include determining, using radio frequency sensing, at least one characteristic of the target based on information in at least one of the plurality of sensing instances.

Abstract: A method of wireless communication is disclosed herein. The method includes measuring a WB channel via FMCW channel estimation. The method includes selecting a WB SSB and a subband in a BWP based on the measured WB channel. The method includes performing a RACH procedure based on the WB SSB and the subband in the BWP. The method includes outputting an indication of the performed RACH procedure based on the WB SSB and the subband in the BWP.

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 configuration of a control region in a delay-Doppler domain. The UE may receive, from the base station, a physical downlink control channel (PDCCH) communication with orthogonal time frequency space (OTFS) precoding. The UE may decode the PDCCH communication with OTFS precoding based at least in part on the configuration of the control region in the delay-Doppler domain. Numerous other aspects are described.

Abstract: Aspects of the disclosure involve a technique for receiving signals for communication and sensing. The technique comprises receiving, at a communication device, one or more sensing signals within an air interface frame structure comprising a plurality of slots, each slot comprising a plurality of symbols. The one or more sensing signals occupy a first subset symbols in the plurality of symbols. The technique further comprises receiving, at the communication device, one or more communication signals occupying a second subset of symbols in the plurality of symbols. The one or more sensing signals comprise one or more sensing waveforms, each being associated with a duration aligned with one or more symbol boundaries. The one or more communication signals comprise one or more communication symbols, each being associated with a duration aligned with one or more symbol boundaries.

Abstract: This disclosure provides methods, devices and systems for channel sounding for wireless communications. Some implementations more specifically relate to scheduling sounding reference signal (SRS) resource sets for wireless devices having more than 4 receive (RX) antenna ports. In some implementations, a base station may determine an antenna switching capability of a user equipment (UE). The antenna switching capability indicates a number of RX antenna ports of the UE. The base station schedules a number of SRS resource sets for the UE based at least in part on the number of RX antenna ports in excess of four. For example, the number of RX antenna ports may be equal to 8. As another example, the number of RX antenna ports may be equal to 6. The base station further receives, from the UE, uplink transmissions of one or more SRS resources for each of the scheduled SRS resource sets.

Abstract: During positioning of a user equipment (UE), (DL) positioning reference signals (PRS) transmitted by one or more transmission reception point (TRP) in a wireless communication system may be preempted or punctured by higher priority transmissions, such as ultra-reliable low-latency traffic (URLLC). A PRS preemption indication (PI) may be provided to a UE identifying one or more TRPs affected by preemption. The PRS PI may further identify the time domain and frequency domain of the preempted DL PRS transmissions. The PRS PI may identify the time domain, e.g., based on a number of PRS symbols between two monitoring occasions, wherein only PRS symbols that contain positioning reference signals associated with the group of TRPs are counted. The PRS PI may identify the frequency domain by identifying at least one of four or more frequency sub-bands of the preempted DL PRS transmissions.

Abstract: A method of wireless communication, by a user equipment (UE) supporting a four transmitter/six receiver (4T6R) antenna configuration, reports a sounding reference signal (SRS) switching capability. The method receives an SRS antenna switching configuration, and performs SRS antenna switching while transmitting multiple SRSs via SRS resources with multiple transmitters for different antenna ports, in accordance with the SRS antenna switching configuration. At least one of the different antenna ports may use at least two of the SRS resources. A quantity of the different antenna ports assigned to each SRS resource may be different for the SRS antenna switching. The UE may sound the different antenna ports an equal number of times, and at least one of the different antenna ports may use at least two of the SRS resources for the SRS antenna switching.

Abstract: Radio frequency (RF) sensing of a target object by a wireless network is supported by a network node that derives one or more object features for the target object using non-RF sensor measurements and reports the object features to a server for the RF sensing. The non-RF sensors, for example, may be one or more of a camera, ultra-sound sensor, lidar, barometer, etc. The object features for the target object, which may be related to the object size, position, motion, etc. may be separately reported for each non-RF technology or may be reported as a common set of object features. The object feature report may include a time stamp, and may associate an object ID for the target object with the reported object features. Some object features may be prioritized over others, and object features that do not change may not be reported in subsequent reports.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a first network node transmits, to a second network node, a first subset of a plurality of portions of a first positioning reference signal (PRS) symbol of a PRS resource during a corresponding first subset of a plurality of portions of a first orthogonal frequency division multiplexing (OFDM) symbol, wherein a number of the plurality of portions of the PRS symbol and a number of the plurality of portions of the OFDM symbol are equal to a comb size of the PRS resource, and refrains from transmitting, to the second network node, a second subset of the plurality of portions of the PRS symbol during a corresponding second subset of the plurality of portions of the first OFDM symbol.

Abstract: Techniques are provided for defining waveforms for half-duplex monostatic radio frequency (RF) sensing. An example method for performing RF sensing operations includes receiving assistance data for radio frequency sensing operations including at least a waveform time domain parameter and a waveform periodicity parameter, and performing radio frequency sensing operations utilizing the waveform time domain parameter and the waveform periodicity parameter.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration identifying a first set of frequency resources for transmitting a sounding reference signal, where the sounding reference signal may be used at least for downlink channel state information acquisition. The UE may receive an indication of an association between the configuration for the sounding reference signal and a second set of frequency resources and determine, based on the association, values for one or more sounding reference signal transmission parameters for the first set of frequency resources. The UE may transmit the sounding reference signal on the first set of frequency resources based on the determined one or more values.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a New Radio (NR) user equipment (UE) may receive a configuration that configures the NR UE with a capability to use a Long Term Evolution (LTE) cell-specific reference signal (CRS) for updating a tracking loop. The NR UE may receive an LTE CRS. The NR UE may update the tracking loop based at least in part on the LTE CRS. Numerous other aspects are described.

Abstract: Disclosed are techniques for sensing. In an aspect, a wireless node receives or determines a time-division duplex (TDD) configuration that configures a set of contiguous downlink symbols, a set of contiguous uplink symbols and a set of contiguous cell-specific flexible symbols that follows the set of contiguous downlink symbols and precedes the set of contiguous uplink symbols. The wireless node further performs a radio frequency for sensing (RF-S) operation during one or more flexible symbols of the set of contiguous cell-specific flexible symbols.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node, a capability report indicating one or more capability parameters that are associated with wideband interference measurement of an orthogonal frequency division multiplexing (OFDM) channel and a supported subband size for the OFDM channel. The UE may receive, from the network node, configuration information indicating an interference measurement resource associated with a set of frequency domain resources, wherein the set of frequency domain resources includes a greater number of frequency domain resources than the supported subband size. The UE may measure, based on the reception of the configuration information, the interference measurement resource to obtain interference measurement information associated with the OFDM channel. The UE may transmit, to the network node, a measurement report indicating the interference measurement information.

Abstract: A communication device includes a processor configured to: transfer, via a transceiver, a wireless data signal within a communication frequency range; determine a capability of the communication device to measure a wireless radar signal received via the transceiver, the wireless radar signal having a frequency within the communication frequency range; transmit, via the transceiver to a network entity, a first indication of the capability of the communication device to measure the wireless radar signal, the first indication being indicative of a transmit power level of the wireless radar signal from a source of the wireless radar signal or a received power level of the wireless radar signal at the communication device; receive, via the transceiver, the wireless radar signal; determine a positioning measurement of the wireless radar signal; and transmit a second indication of the positioning measurement via the transceiver to the network entity.

Abstract: Aspects described herein relate to receiving, from a network node, a first transmission for configuring a configured grant, wherein the configured grant allocates one or more resources associated with an uplink transmission process having a transmission process identifier, obtaining a first indication that the network node uses a fallback downlink control information (DCI) format, and modifying, based at least in part on obtaining the first indication and the transmission process identifier, the uplink transmission process. Other aspects relate to configuring a device for modifying the uplink transmission process, receiving uplink communications based on the modified uplink transmission process, and/or the like.

Abstract: A radio frequency sensing method includes: obtaining, at an apparatus, a sensing signal configuration of a sensing signal in response to a request for radio frequency sensing, the sensing signal configuration indicating a first segment with a monotonically increasing frequency over a first length of time, indicating a second segment with a monotonically decreasing frequency over a second length of time, and indicating a third segment with a monotonically changing frequency over a third length of time that is shorter than the first length of time and the second length of time; and transmitting the sensing signal configuration from the apparatus, or transmitting the sensing signal from the apparatus, or transmitting the sensing signal configuration and the sensing signal from the apparatus, or receiving and measuring the sensing signal at the apparatus, or any combination of two or more thereof.

Abstract: Disclosed are techniques for wireless communication and positioning. In an aspect, a base station (BS) may determine a slot configuration that defines at least a portion of one or more slots configured for RF sensing. The BS may send the slot configuration to at least one other telecommunications device, e.g., to another BS if the RF sensing is bistatic radar. The BS may then perform RF sensing according to the slot configuration. In another aspect, a user equipment (UE) may receive a slot configuration that defines at least a portion of one or more slots configured for RF sensing. The UE may operate according to the slot configuration, e.g., the UE may go to low power or sleep mode while the base station is performing RF sensing, and may optionally wake up to receive downlink signals or to transmit uplink signals.