Methods, systems, and devices for wireless communications are described. A user equipment (UE), such as a vehicle UE may determine, based on one or more communication parameters of the UE, a radar field of view (FOV) for radar communications at the UE relative to a fixed frame of reference for the wireless communications system. The UE may determine a set of radar transmission parameters based on the radar FOV, where each radar transmission parameter of the set of radar transmission parameters is a function of the radar FOV. The UE may transmit a radar message using the set of radar transmission parameters according to the radar FOV relative to the fixed frame of reference.

Methods, apparatus and systems for wireless sensing based on channel information are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless multipath channel of a venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue; a receiver configured to receive the wireless signal through the wireless multipath channel, wherein the received wireless signal differs from the transmitted wireless signal due to the wireless multipath channel and the motion of the object; and a processor. The processor is configured for: obtaining N1 time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal, computing N4 selected projections based on the N1 TSCI, and performing a sensing task associated with the motion of the object based on the N4 selected projections. N4 is a positive integer. N1=N2*N3. N2 is a quantity of transmit antennas on the transmitter. N3 is a quantity of receive antennas on the receiver. Each TSCI is associated with a respective transmit antenna of the transmitter and a respective receive antenna of the receiver.

Provided are a radar communication system capable of achieving road-to-vehicle communication or vehicle-to-vehicle communication with a simpler configuration, an in-vehicle radar device, and a transmission device. The radar communication system includes the in-vehicle radar device and the transmission device that is placed outside a vehicle. The in-vehicle radar device includes a millimeter wave radar sensor configured to transmit a transmission wave to outside of the vehicle and receive a reflected wave of the transmission wave, to thereby detect an object; a determination section configured to determine whether or not a physical relation between the object detected by the millimeter wave radar sensor and the vehicle is within an acceptable range; and an information extracting section configured to extract, when the physical relation is out of the acceptable range, information associated with a frequency characteristic of the reflected wave. The transmission device includes a reception section configured to receive the transmission wave; a modulated signal generating section configured to modulate, in association with information set in advance, a frequency characteristic of the transmission wave received by the reception section, to thereby generate a modulated signal; and a transmission section configured to transmit the modulated signal as part of the reflected wave.

In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: an ultra-wideband (UWB) transceiver configured to communicate with an external communication device; a processing unit configured to switch the UWB transceiver between different transceiver modes of operation while the UWB transceiver receives or transmits a data frame; wherein the different transceiver modes of operation include a ranging mode, an angle-of-arrival (AoA) mode and/or a radar mode. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived. In accordance with a third aspect of the present disclosure, a corresponding computer program is provided.

A method for assisting in locating a target object, a method for locating a target object, and an apparatus. In an embodiment, the method for assisting in locating a target object is applied to a station (STA), and the method includes: receiving a wireless sensing sounding frame including radar measurement indication information from an access point (AP); sending an uplink data packet to the AP, recording a first sending moment, and performing radar measurement on a target object based on the radar measurement indication information to obtain a radar measurement result; receiving a downlink data packet from the AP, and recording a first receiving moment; and sending the first sending moment, the first receiving moment and the radar measurement result to the AP.

In an embodiment, a millimeter-wave system includes a first circuit having M channels, one or more antennas coupled to the first circuit, and a controller that includes a resource scheduler module. The controller is configured to operate the millimeter-wave system as a radar device and as a communication device based on an output of the resource scheduler module.

The apparatus (e.g., a first radar device) may be configured to receive a second radar waveform from a second radar device; determine a transmission timing difference between a transmission time of a first radar waveform and a transmission time of the second radar waveform, where the first radar waveform may be transmitted by the first radar device; and generate a radar point cloud associated with one or more targets based on the received second radar waveform and the determined transmission timing difference. A second radar device may be configured to transmit a second radar waveform; receive, from one or more targets, one or more reflections of the second radar waveform; and transmit, to a first radar device, cooperative radar sensing information regarding the received one or more reflections.

A base station may allocate wireless communication resources to configure a synthetic wireless communication signal for use as a radar signal. The synthetic wireless communication signal may be configured according to a wireless communication protocol of a wireless communication network that is associated with the base station. The base station may transmit, from an antenna and toward an area associated with the base station, the synthetic wireless communication signal. The base station may detect a reflected signal that is associated with the synthetic wireless communication signal. The base station may process the reflected signal to generate radar data; and perform an action associated with the radar data and the area.

Some embodiments of the invention relate to a handheld measuring aid for use in a system—having a station for position and orientation determination of the handheld measuring aid—for surveying an object surface. the handheld measuring aid has in this case on a body, visual markings which are arranged in a defined spatial relationship, forming a pattern, on the body in a marking region, a measuring probe, which is arranged on an orifice of the body in a defined spatial relationship in relation to the pattern, for the object surface, an operating element, an electronic circuit for generating a measurement triggering signal—occurring as a function of an actuation of the operating element—and wireless communication means for transmitting the measurement triggering signal to the station.

Computing readable media, apparatuses, and methods for secure time of flight measurements are disclosed. An apparatus comprising processing circuitry is disclosed. The processing circuitry configured to encode a fine time measurement (FTM) request. The processing circuitry further configured to decode a FTM response from the responder, where the FTM response is to be received at the wireless device at a time t2, and generate a symmetric key from a private encryption key of the wireless device and the public encryption key of the responder. The processing circuitry further configured to transmit an acknowledgement to the FTM response, the acknowledgement is transmitted at time t3, and decode an encrypted FTM frame from the responder with the symmetric key, the decrypted FTM message comprising a time t1 when the FTM response was to be transmitted and a time t4 when the acknowledgement to the FTM response was to be received.