Aspects of this disclosure relate to user equipment assisted multiple-input multiple-output (MIMO) downlink configuration. Features are described for a user equipment determination of a desired transmission mode and/or active set of serving nodes for wireless communication service(s). The user equipment may submit a request for the desired mode and/or nodes to a network controller such as a baseband unit. The user equipment may subsequently receive a configuration for the requested wireless communication service(s).

A method of wireless communication by a transmitting sidelink user equipment (UE) determines at least one quasi-co-location (QCL) relationship between antenna ports of the transmitting sidelink UE. The QCL relationship corresponds to carrier frequency offset (CFO), average delay, delay spread, Doppler shift, and/or Doppler spread across the antenna ports of the transmitting sidelink UE. Each port maps to a different transmission and reception point (TRP). The method also indicates the QCL relationship(s) to a receiving sidelink UE. A method of wireless communication by a receiving sidelink UE receives a message from TRPs of a transmitting sidelink UE. The message indicates a QCL assumption for the TRPs. The method also individually measures reference signals received from each transmission port of the TRPs. The method may also determine whether signaling from the TRPs satisfies all conditions for the QCL assumption, and report to the transmitting sidelink UE a result of the determining.

There is provided mechanisms for classifying microwave link data of a microwave system comprises a point-to-point wireless microwave link. A method is performed by a controller entity. The method comprises obtaining, in time windows, microwave link data in terms of signal quality measurement values and received power values for the point-to-point wireless microwave link. The method comprises classifying per time window, the microwave link data per time window to operating conditions in a set of operating conditions by, from the signal quality measurement values and received power values per time window, estimating probability values for each of the operating conditions according to a mapping, as learned through training, between pieces of microwave link data and operating conditions.

In a wireless local area network (LAN) system, a sensing session comprises a first burst and a second burst, wherein, in the first burst, a transmitting STA may transmit a first sounding signal to a first receiving STA and a second receiving STA. In the first burst, the transmitting STA may receive, from the first receiving STA, a first feedback frame comprising first channel information between the transmitting STA and the first receiving STA, and, from the second receiving STA, a second feedback frame comprising channel information between the transmitting STA and the second receiving STA. In the second burst, the transmitting STA may receive a second sounding signal from the first receiving STA. In the second burst, the transmitting STA may receive, from the second receiving STA, a third feedback frame comprising channel information between the first receiving STA and the second receiving STA.

Communication device comprising circuitry configured to measure a first phase of a first measurement signal transmitted by a first node to a second node, measure a second phase of a second measurement signal transmitted by the second node to the first node, repeat the measurements of the first and second phases one or more times, receive phase information from the first node and/or the second node, the phase information including third phase information acquired by the second node from measurements of a third phase of the first measurement signals and/or fourth phase information acquired by the first node from measurements of a fourth phase of the second measurement signals, and estimate a distance difference using the measured first and second phases and the received phase information.

Communication device comprising circuitry configured to measure a first phase of a first measurement signal transmitted by a first node to a second node, measure a second phase of a second measurement signal transmitted by the second node to the first node, repeat the measurements of the first and second phases one or more times, receive phase information from the first node and/or the second node, the phase information including third phase information acquired by the second node from measurements of a third phase of the first measurement signals and/or fourth phase information acquired by the first node from measurements of a fourth phase of the second measurement signals, and estimate a distance difference using the measured first and second phases and the received phase information.

This application relates to the field of communication technologies and discloses methods and apparatuses for using an unlicensed spectrum. An example method includes: obtaining information about a target unlicensed frequency band, and transmitting, based on the information about the target unlicensed frequency band, a signal on a supplementary uplink (SUL), where a spectrum of the SUL includes the target unlicensed frequency band. The information about the target unlicensed frequency band includes one or more of the following information: reference signal received power (RSRP), reference signal received quality (RSRQ), and a signal to interference plus noise ratio (SINR).

The transmission of a reference signal, such as a CSI-RS, is enabled while maintaining a power saving effect when performing inter-cell cooperative transmission/reception or the like in a plurality of cells. In order to realize inter-cell cooperative transmission/reception, a CSI-RS which is used for estimating the state of a spatial propagation path of a communication line is generated by a CSI-RS generation unit, and the CSI-RS is disposed in a predetermined subframe by a disposition unit and transmitted. At this time, when a frame has ten subframes #0 to #9, the CSI-RS is disposed in the subframes #4 and #9, which are subframes excluding the subframes #0 and #5 incapable of transmitting a CSI-RS and are subframes other than subframes capable of acting as MBSFN subframes when discontinuous communication (Extended Cell DTX) is performed so as to achieve power saving, and transmitted.

The transmission of a reference signal, such as a CSI-RS, is enabled while maintaining a power saving effect when performing inter-cell cooperative transmission/reception or the like in a plurality of cells. In order to realize inter-cell cooperative transmission/reception, a CSI-RS which is used for estimating the state of a spatial propagation path of a communication line is generated by a CSI-RS generation unit, and the CSI-RS is disposed in a predetermined subframe by a disposition unit and transmitted. At this time, when a frame has ten subframes #0 to #9, the CSI-RS is disposed in the subframes #4 and #9, which are subframes excluding the subframes #0 and #5 incapable of transmitting a CSI-RS and are subframes other than subframes capable of acting as MBSFN subframes when discontinuous communication (Extended Cell DTX) is performed so as to achieve power saving, and transmitted.

A method for assessing path quality between a source node and a destination node, the method comprising, at a node: determining a first parameter and a first path classification of a first path having at least one link; determining a second parameter and a second path classification of a second path having at least one link; determining the quality of the first path based on the first parameter and the first path classification; determining the quality of the second path based on the second parameter and the second path classification; and comparing the quality of the first path and the quality of the second path thereby to determine the best quality path.