A communication method includes: determining a target radio frame, the target radio frame including a channel state information (CSI) threshold, and the CSI threshold being configured for a responder to send a CSI measurement value to an initiator according to the CSI threshold; and sending the target radio frame.

A weak signal detection device for detecting a weak signal appearing intermittently with a level that is less than or equal to internal noise of a radio frequency (RF) receiving part may comprise: a cross-correlation spectrum processing part configured to generate a cross-correlation spectrum using a correlation between RF receiving channels; and a waveform combiner configured to generate an output spectrum having a spectrum persistent function by assigning weight values to a current waveform and a previous waveform of the cross-correlation spectrum.

Methods, systems, and devices for wireless communications are described. In some aspects, a first network entity may support one or more mechanisms according to which the first network entity may measure cross-link interference (CLI) from a second network entity and report one or more interference metrics associated with the measured CLI on a per-subband basis. The first network entity may receive an indication of a set of subbands, measure a set of interference metrics associated with the indicated set of subbands, and transmit a measurement report to indicate or otherwise convey information associated with at least a subset of the measured interreference metrics. The first network entity may receive the indication of the set of subbands from a centralized unit (CU), an operations, administration, and maintenance (OAM) entity, or a neighboring base station and may transmit the measurement report to the CU, the OAM, or the neighboring base station.

Techniques for calibrating in-band and out-of-band receivers using complex signals. The techniques include receiving a signal from a wireless radio antenna at a first receiver and a second receiver in a wireless communication system. The first receiver is configured to receive in-band transmission during operation of the wireless communication system and the second receiver is configured to receive out-of-band transmission during operation of the wireless communication system, and the signal is transmitted at least partially simultaneously from the wireless radio antenna to the first receiver and the second receiver. The techniques further include determining a difference of complex signals for the first receiver and the second receiver based on measuring the signals received from the wireless radio antenna at the first receiver and the second receiver, and calibrating the second receiver with the first receiver based the difference of complex signals.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration signal identifying reference signal resources for a channel measurement procedure performed on a multi-band channel, the configuration signal further identifying parameters of a feedback message associated with the channel measurement procedure, the parameters comprising a set of coherence bandwidth metrics for the multi-band channel that are to be indicated in the feedback message. The UE may perform the channel measurement procedure using the reference signal resources to identify the set of coherence bandwidth metrics for the multi-band channel. The UE may transmit the feedback message indicating the set of coherence bandwidth metrics.

An over-the-air measurement system for testing a reconfigurable intelligent surface (RIS) includes a signal generator circuit configured to generate at least one RF signal, at least one RF antenna configured to transmit the at least one RF signal and to receive at least one reflected RF signal, and a positioner unit configured to hold an RIS circuit in an adaptable position. The at least one RF antenna includes only one RF antenna or only one RF antenna array functioning both as transmitter and receiver of the at least one RF signal. The measurement system is configured such that far-field conditions of the at least one transmitted RF signal are provided at the RIS circuit, and that far-field conditions of the at least one reflected RF signal are provided at the at least one RF antenna. The measurement system is configured to analyze the signals to determine a reflection parameter.

The present disclosure provides a communication apparatus and a communication method for extended sensing by proxy, the communication apparatus comprising: a receiver, which, in operation, receives a first request frame from a second communication apparatus, the first request frame indicating a condition to select one or more links, each of the one or more links attached to one or more third communication apparatuses; circuitry, which, in operation, is configured to select a fourth communication apparatus and generate a second request to a fourth communication apparatus to perform a measurement on the one or more links; and a transmitter, which, in operation, transmits a first report frame to the second communication apparatus carrying one or more reports of the measurement corresponding to the one or more links.

A device is provided, which includes a transceiver and a processor. The transceiver connects the device to one or more first stations and an access point, and the access point is connected to one or more second stations. The processor is coupled to the transceiver and is configured to perform operations including: building a first cross-BSS (basic service set) RSSI (received signal strength indication) measurement report; obtaining a second cross-BSS RSSI measurement report from the access point; in response to a link between the access point and at least one of the second stations being built, adjusting transmit power of the transceiver to satisfy a predetermined condition to transmit a data packet to one of the first stations using non-triggered base spatial reuse according to the first cross-BSS RSSI measurement report and the second cross-BSS RSSI measurement report.

The invention relates to a measurement system, including a signal analyzer or monitoring receiver, for measuring and analyzing modulated signals. The system includes a signal acquisition device having input port(s), wherein the signal acquisition device is configured to capture modulated signal(s) applied to the input ports, wherein each captured modulated signal can be represented as an I/Q signal; wherein the signal acquisition device generates at least two digital I/Q data streams based on the one or more modulated signals, wherein the at least two digital I/Q data streams are generated in parallel. The measurement system includes a selection device to select at least one target frequency bandwidth in each of the at least two digital I/Q data streams; and a signal processing device configured to analyze the at least two digital I/Q data streams in the selected target frequency bandwidths.

An approach is provided for sensing changes in a physical environment, where a transmitter transmits a request for measurement of at least one symbol. The request includes an identifier and an indication of the at least one symbol. A signal comprising the at least one symbol is transmitted, and a measurement report for the at least one symbol is received. A receiver receives a request for measurement of at least one symbol in which the request includes an identifier and an indication of the at least one symbol. A signal including the at least one symbol is received. Measurements are reported on the at least one symbol to provide a measurement report, and the measurement report is transmitted.