Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may transmit an indication of micro-Doppler measurements associated with a first artificial intelligence or machine learning (AI/ML) model. The wireless communication device may receive, in association with transmitting the indication of the micro-Doppler measurements, an indication of a second AI/ML model that is an update of the first AI/ML model. The wireless communication device may transmit, in connection with using the second AI/ML model, an indication associated with object recognition. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may determine a reference location associated with an image corresponding to a target area, wherein the target area is offset from the reference location. The network node may transmit a radio frequency signal, wherein the radio frequency signal is beamformed based at least in part on the reference location to provide the radio frequency signal to the target area. Numerous other aspects are described.

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for techniques for wireless communications based on orbital angular momentum (OAM) modes. One aspect provides a method for wireless communications by a first wireless node. The method generally includes transmitting traffic to a user equipment (UE) on an access link, using a first portion of a uniform circular array (UCA) antenna panel and transmitting traffic to a second wireless node on a backhaul link, using a second portion of the UCA antenna panel.

Abstract: An example aspect comprises selecting an azimuth mode for an OAM MIMO transmission by a transmitter that includes a first number of circles that each include a second number of antenna elements, wherein the azimuth mode defines a DFT vector of a size less than or equal to the second number; selecting, from a plurality of radial modes associated with the azimuth mode, a radial mode for the transmission, wherein the radial modes include at least a first radial mode defining a first beamforming vector and a second radial mode defining a second beamforming vector, wherein each one of the first and second beamforming vectors includes the DFT vector weighted and repeated for a number of times less than or equal to the first number, wherein the first and second beamforming vectors are orthogonal to each other; and transmitting a signal using a beam configured according to the radial mode.

Abstract: Aspects presented herein may enhance the navigation function of navigation/map applications or systems when GNSS signals are weak or sporadic. In one aspect, a UE monitors a position of the UE based on GNSS communication, where the position of the UE is monitored using at least one first map layer of a plurality of map layers associated with a map. The UE detects that the position of the UE corresponds to a predefined location when the GNSS communication is below a communication threshold. The UE switches to monitoring the position of the UE using at least one second map layer of the plurality of map layers upon detecting that the position of the UE corresponds to the predefined location, where the at least one second map layer is associated with the predefined location.

Abstract: Systems and techniques are described herein for mutual authentication in wireless communication. For example, a process may include: transmitting separate authentication requests using separate MIMO channels between network nodes; transmitting an authentication proof from one network node to another; receiving configuration requests based on successful authentication of one network node by the other over the respective MIMO paths; authenticating the configuration requests; and transmitting separate configuration responses via the separate MIMO paths based on the authentication.

Abstract: A base station may select at least one of one or more 2D beams for at least one first SSB of a plurality of SSBs or one or more 3D beams for at least one second SSB of the plurality of SSBs. A UE may identify a beam type of at least one of one or more 2D beams for at least one first SSB of a plurality of SSBs or one or more 3D beams for at least one second SSB of the plurality of SSBs. The base station may transmit, to the UE, at least one of the at least one first SSB via the one or more 2D beams or the at least one second SSB via the one or more 3D beams.

Abstract: Aspects described herein include devices and methods for phase lock loop (PLL) output sharing between multiple communication chains in a wireless communication apparatus. In one aspect, an apparatus includes phase locked loop (PLL) circuitry having a shared PLL output, radar signal generation circuitry, a first transmission chain coupled to the shared PLL output and the radar signal generation circuitry, and a second transmission chain coupled to the shared PLL output and the radar signal generation circuitry.

Abstract: Aspects presented herein may enable a UE to verify the integrity of map data, thereby improving the accuracy and safety of map-aiding positioning and/or map-based positioning. In one aspect, a UE performs a map-aiding positioning based on a first set of map data. The UE verifies whether an integrity of the first set of map data meets an accuracy threshold. The UE discards the first set of map data if the verification of the integrity of the first set of map data does not meet the accuracy threshold. For example, the UE may compare the first set of map data with a second set of map data from a different source, and identify the integrity of the first set of map data does not meet the accuracy threshold if the comparison shows an indication of inconsistency above a consistency threshold.

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may include a first set of antenna arrays disposed in a first shape and a receiving device may include a second set of antenna arrays disposed in a second shape. A first axis that intersects an antenna array of the first set of antenna arrays and a centroid of the first shape may be offset from a vertical direction by a first angular offset. A second axis that intersects an antenna array of the second set of antenna arrays and a centroid of the second shape may be offset from the vertical direction by a second angular offset that is different than the first angular offset. The transmitting device may transmit signaling to the receiving device using the first and second sets of antenna arrays, respectively based on difference between the first and second angular offsets.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques may enable transmitting and receiving devices to increase an effective aperture size of transmitting and receiving antenna arrays, which may increase an achievable rank of spatially multiplexed communications. For example, one or both of the transmitting device and the receiving device may use a reflective component to reflect signals transmitted between the devices, which may allow for larger effective aperture sizes without increasing a physical distance between antenna elements. In some examples, the reflective component may be a static concave mirror associated with a predetermined weight vector and focal point. In some examples, the concave mirror may be a reflective intelligent surface (RIS) of reflective elements with reflective properties which may be dynamically adjusted to various weight vectors. An orientation of the RIS may be adjusted to steer a beam in various directions in space.

Abstract: Aspects of the disclosure relate to reporting and correcting a spatial misalignment of an orbital angular momentum (OAM) waveform communicated from a second device to a first device. In an aspect, the first device receives from the second device, the OAM waveform having a spatial misalignment with respect to the second device. The first device determines the spatial misalignment and further determines spatial coordinates for correcting the spatial misalignment and/or one or more channel measurements of the OAM waveform. Thereafter, the first device sends a report based on the spatial misalignment to the second device, the report including the spatial coordinates for correcting the spatial misalignment and/or the one or more channel measurements. The first device then receives an adjusted OAM waveform from the second device, wherein the adjusted OAM waveform is received having a corrected spatial alignment with respect to the second device based on the report.

Abstract: Method and apparatus to determine a line-of-sight (LOS) path based at least on polarization characteristics. The apparatus determines a polarization used by a transmitter for at least one RS. The apparatus receives the at least one RS with a first received polarization in a first configuration and a second received polarization in a second configuration that is different from the first configuration. The apparatus measures polarization characteristics of the first received polarization and the second received polarization. The apparatus determines whether the at least one RS was received in a LOS path from the transmitter based on the measured polarization characteristics and expected received polarization characteristics, wherein the expected received polarization characteristics are based on the determined polarization used by the transmitter.

Abstract: Methods, systems, and devices for wireless communication are described. In some systems, a first device may include a first circular antenna array including a first quantity of antenna subarrays. A second device may include a second circular antenna array including a second quantity of antenna arrays. Each antenna subarray may include one or more antenna elements. The first device may transmit one or more reference signals to the second device. The second device may transmit a feedback message to the first device based on the reference signals. The feedback message may include an indication of sets of beamforming weights or information for determining the sets of beamforming weights based on the second quantity of antenna subarrays being different than the first quantity of antenna subarrays. The first device may transmit one or more signals concurrently to the second device based on the sets of beamforming weights.

Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support orbital angular momentum (OAM) communications between a transmitting device and a receiving device. The transmitting device may generate signals for transmission to the receiving device via a transmitter circle that includes a first quantity of antenna arrays. The transmitting device may transmit the signals using the transmitter circle based on multiple sets of OAM weights, where each signal may be associated with a respective set of OAM weights. The receiving device may receive the signals using a receiver circle that includes a second quantity of antenna arrays that is different than the first quantity. The receiving device may decode the signals based on multiple sets of OAM weights. The sets of OAM weights at the transmitting device and the receiving device may be based on the first quantity being different than the second quantity.

Abstract: Techniques are provided for passive positioning of user equipment (UE) with backhaul messaging. An example method for providing passive positioning information includes transmitting, with a first wireless node, assistance data associated with at least a first reference signal and a second reference signal, transmitting, with the first wireless node, the first reference signal at a first time via one or more over-the-air signals, providing instructions via a wired network connection to enable a second wireless node to transmit the second reference signal at a second time, and transmitting, with the first wireless node, turnaround time information based on the first time and the second time.

Abstract: Techniques are provided for determining a number of user equipment in an area. An example method for determining a number of mobile devices in a counting area includes determining the counting area, determining counting configuration information based on the counting area, transmitting the counting configuration information to one or more mobile devices, receiving counting responses from the one or more mobile devices, and determining the number of mobile devices in the counting area based on the counting responses.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor one or more first conditions pertaining to non-cellular communications between the UE and a non-cellular network while the UE is operating in a dual networking mode for steering, switching, or splitting traffic (e.g., an access traffic steering, switching, and splitting (ATSSS) mode) between the non-cellular network and a cellular network. The UE may predict an availability status of at least the non-cellular network based on at least one of the one or more first conditions. In some cases, the UE may determine whether to change dual networking modes based on the availability status and may communicate in accordance with the same or a different dual networking mode using at least one of the cellular network, the non-cellular network, or a combination thereof based on the prediction.

Abstract: A method of wireless communication by a user equipment (UE) includes receiving, from a serving cell, information to assist the UE with interference cancellation of at least one neighbor cell. The method also includes performing interference cancellation based on the information. A method of wireless communication by a network device includes obtaining information to enable interference cancellation of a neighbor cell. The method also includes transmitting the information to assist a user equipment (UE) with interference cancellation of the neighbor cell.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may receive serving beam information associated with a plurality of wireless communication devices. The device may generate an interference model based at least in part on the serving beam information associated with the plurality of wireless communication devices, the interference model indicating locations of one or more clusters in a channel environment. The device may obtain, using the interference model, information associated with an interference prediction for a transmitting wireless communication device. The device may transmit the information associated with the interference prediction to the transmitting wireless communication device. Numerous other aspects are provided.