Systems and methods of assessing a plausibility of a ranging measurement are provided. In some embodiments, a method of assessing a plausibility of a ranging measurement includes: obtaining the ranging measurement from a remote device; obtaining one or more measurements associated with the ranging measurement; and based on the one or more measurements associated with the ranging measurement, determining the plausibility of the ranging measurement. The embodiments disclosed herein determine the reliability of the measured range and thus enforce the security level of Ultra-WideBand (UWB) transactions to be secured. Some embodiments are based on existing and standardized metrics. Some embodiments include a capability to auto-assess whether it is reliable to estimate the plausibility of the transaction range. In some embodiments, the computations needed are relatively simple and can be performed by relatively simple devices.

Backscatter AMP device detection and characterization using Ultra Wideband (UWB) impulse radar may be provided. First, a computing device may transmit an UWB signal comprising pulses to a Backscatter Device (BKD). Next, the computing device may receive a reflection of the UWB signal from the BKD in response to the UWB signal. Then the computing device may locate the BKD using a Channel Impulse Response (CIR) of the reflection of the UWB signal.

A first multi-link device comprises a first station comprising a transmitter and a receiver and being configured to communicate with a first station of a second multi-link device on a first link; a second station comprising a receiver but no transmitter and being configured to receive control information from another first station of the second multi-link device on a second link different from the first link and/or from another communication device; and circuitry configured to control the first and second stations, wherein the second station is configured to provide the received control information to the circuitry and/or the first station.

This disclosure describes systems, methods, and devices related to a trigger-based null data packet (NDP) for channel sounding system. A device may send a trigger frame to a group of station devices, the group of station devices including a first station device, the trigger frame indicating a high efficiency (HE) long training field (HE-LTF) mode and a guard interval duration. The device may identify a HE trigger-based (TB) null data packet (NDP) received from the first station device, the HE TB NDP including a first packet extension field, wherein the HE TB NDP is associated with the HE-LTF mode and the guard interval duration indicated in the trigger frame. The device may send a downlink NDP including a second packet extension field, a second HE-LTF mode, and a second guard interval duration. The device may determine channel state information based on HE TB NDP received from the first station device.

Interference mitigation in SSB and/or TRS processing is described. An apparatus is configured to receive, from a network node, a reference signal associated with the network node and at least one neighboring network node. The apparatus is configured to obtain Rnn information from at least one noise tap of a CIR of the reference signal. The apparatus is also configured to apply a noise whitening to the CIR based on the Rnn information.

Certain aspects of the present disclosure provide techniques for obtaining one or more reference signals specific to a communication channel; inputting at least one characteristic associated with the one or more reference signals into a machine learning model that is configured to predict one or more channel parameters associated with multipath propagation characteristics of the communication channel; outputting, from the machine learning model, one or more predicted channel parameters specific to the multipath propagation characteristics of the communication channel; and performing channel estimation to generate a characteristic of the communication channel based on the one or more predicted channel parameters.

A coordinated transmission control method, apparatus, and system. A primary access point and a secondary access point determine whether to perform coordinated transmission through inter-cell configuration parameter sharing and based on a dual decision condition of an interference test. An anti-interference beamforming manner is determined based on a specific cell configuration parameter, and whether to perform coordinated transmission is determined with reference to the dual decision condition of the interference test, wherein the primary and secondary access points learn an interference status in advance to prevent unnecessary retransmission resulting from interference caused during actual coordinated transmission, and to improve communication efficiency.

Provided are a method and apparatus for determining a delay compensation value, a device, and a computer-readable storage medium. The method includes: obtaining a channel frequency domain impulse response of a transmit link, where the transmit link is obtained by combining at least two hardware modules in a transmit circuit, obtaining a time domain impulse response according to the channel frequency domain impulse response, and determining a delay compensation value of the transmit link according to a preset condition and the time domain impulse response.

A communication frame for an OTFS transmission system includes first-type and second-type blocks. The first-type block includes pilot signals, guard signals, and data signals, the second-type block exclusively includes data signals. The pilot symbols, guard signals, and data symbols of the first-type block, and the data symbols of the second-type block, are arranged along the points of a grid in the delay-Doppler domain. In the communication frame, a first-type block is followed by a second-type block, and a second-type block is followed by a first-type block. In the first-type block at least one pilot symbol is surrounded on at least three sides by one or more guard symbols. Points of the grid of the first-type blocks in the delay-Doppler domain that are not occupied by pilot symbols or guard symbols are used for data symbols. The communication frame permits determining oscillator frequency offset and channel coefficients in a receiver.

A communication method and system, the method including receiving, by a network device, first indication information, where the first indication information indicates a first duration, and the first duration includes a duration in which a terminal device omits performance of at least one of open-loop timing advance adjustment or open-loop frequency offset adjustment, determining, by the network device, a first window based on the first duration, where the first window is associated with channel estimation, and sending, by the network device, second indication information to the terminal device, where the second indication information indicates the first window.