For CSI reporting mechanisms, a user equipment (UE) includes a transceiver and a processor operably connected to the transceiver. The transceiver is configured to receive channel state information (CSI) process configuration information including at least one beamformed type associated with a plurality of non-zero-power (NZP) CSI reference signal (CSI-RS) resource configurations and receive a CSI-RS resource index (CRI) reporting configuration. The processor is configured to calculate, in response to receipt of the configuration information, a CRI and a channel quality indicator (CQI). The transceiver is further configured to report the CRI and the CQI by transmitting the CRI and the CQI on an uplink channel.

Channel state information (CSI) can be transmitted to a network node incrementally to increase network efficiency. The CSI feedback framework can be enhanced by allowing a user equipment (UE) to report multiple sets of CSI feedback, where each set can comprise a rank indicator (RI), a pre-coder matrix indicator (PMI), and a channel quality indicator (CQI). Since a different set may have a different sub-band, the CSI feedback framework can support the sub-band rank, wherein rank data from a wideband and the sub-band can be used by the network.

Aspects described herein relate to receiving, at a repeater and from a serving base station, one or more transmitted downlink beams, receiving, at the repeater and from a downstream node served by the serving base station, one or more transmitted uplink beams, and transmitting, to the serving base station, one or more parameters related to determining a channel quality metric using at least the one or more transmitted downlink beams and the one or more transmitted uplink beams.

A beam selection system that includes a memory operably connected to processing circuitry. The memory configured to store instructions that request call control information from a device; receive a plurality of user equipment (UE) trajectories and parameters from the device; predict with a first artificial intelligence (AI) engine a plurality of beam patterns within a beam index at a plurality of nodes corresponding with a predicted UE location based on the plurality of UE trajectories and parameters of each UE; transmit the plurality of predicted beam patterns to the plurality of nodes corresponding with a corresponding UE of a plurality of UEs; receive a plurality of UE selected beam patterns from the plurality of nodes; train a second AI engine based the plurality of UE selected beam patterns. The processing circuitry is further configured to update the first AI engine based on learned results from the second AI engine.

An aerial repeater position determination apparatus is proposed. The apparatus may include a transceiver configured to acquire a height of an aerial repeater, a position of a source node, and a position of a mobile communication base station. The apparatus may also include an initial position determination processor configured to determine an initial position by checking a position at which a signal to noise ratio (SNR) of a signal received by the mobile communication base station is maximized on a first plane parallel to the ground and including the aerial repeater, on the basis of the position of the source node, the position of the mobile communication base station, and the height of the aerial repeater.

One innovative aspect of the subject matter described in this disclosure can be implemented in a method for wireless communication. The method includes determining a configuration of reference signal (RS) resources to be used by a user-equipment (UE) to perform beam measurements, transmitting, to the UE, an indication of the configuration of the RS resources, and receiving, from the UE, a report indicating a plurality of RS resource indicators based on the beam measurements, each of the RS resource indicators being associated with one of the RS resources. In some aspects, the BS selects a subset of the RS resources based on the report from the UE, transmits, to the UE, an indication to provide channel measurement information for the subset of the RS resources, and receives a report including the channel measurement information from the UE. The BS may also perform joint precoding of signals for transmission via the RS resources based on the channel measurement information.

A method of operating a user equipment, UE, according to some embodiments includes performing (202) a channel measurement on a measurement resource for channel measurement, performing (204) two or more interference measurements on two or more measurement resources for interference measurement, for each interference measurement, determining (206) quality values associated with the interference measurement and the channel measurement, determining (208) a statistical measure based on the quality values, and transmitting (210) the statistical measure to a network node in a channel state information, CSI, report.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit communications on a plurality of physical sidelink channels with a plurality of beams for a plurality of subchannels. The UE may select a beam for transmission or reception from among the plurality of beams. Numerous other aspects are provided.

In accordance with a first aspect of the present disclosure, a localization system is provided, comprising: a plurality of ultra-wideband (UWB) communication nodes; a plurality of antennas, each one of said antennas being included in one of said UWB communication nodes; an antenna selection unit configured to select a subset of said antennas for use in ranging operations that output a position estimate of an external device; wherein the antenna selection unit is configured to select said subset in dependence on at least one previous ranging operation. In accordance with a second aspect of the present disclosure, a corresponding method of operating a localization system is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided, comprising computer-executable instructions that, when executed by a localization system, cause said localization system to carry out a method of the kind set forth.

Methods, systems, and devices for wireless communications are described that support a two-step reporting procedure for demodulation reference signal (DMRS) configuration adjustment. A base station may transmit to a user equipment (UE) control information indicating a subset of DMRS configurations to be addressed for DMRS configuration selection and reporting. As a part of channel state feedback (CSF) evaluation procedures the UE may identify link quality characteristics and spectral efficiency metrics corresponding to the subset of DMRS configurations and determine a preference for a configuration change from the currently used DMRS configuration (which is represented by DMRS configuration determined from channel state information (CSI) reference slot) to a DMRS configuration of the subset based on the link spectral efficiency metrics comparison. The UE may transmit to the base station, a report comprising an indication of a UE request for the configuration change and in response, the base station may schedule the UE to report one or more selected DMRS configurations most convenient for the UE channel and reception conditions.