Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive a set of reference signals having different levels of power amplifier compression. The mobile station may transmit a measurement report based at least in part on measurements of the set of reference signals. Numerous other aspects are described.

A communications device configured to detect one or more beams of signals transmitted by each of a plurality of infrastructure equipment forming a plurality of cells of the wireless communications network, each of the beams being separately identifiable and forming a directional bias with respect to a location of the infrastructure equipment. The communications device is configured to perform measurements for evaluating a quality of the plurality of cells including one or more beams on signals received from each of the detected beams, to determine from the evaluation of each of the cells, and if one or more of the cells satisfies predetermined conditions to perform a process for identifying one or more of the cells which should be used by the communications device for transmitting data.

Facilitating improved performance based on inferred user equipment device speed for advanced networks (e.g., 4G, 5G, 6G, and beyond) is provided herein. Operations of a system can comprise estimating a speed of a user equipment device based on a number of times that a layer indicator associated with the user equipment device changes during a defined period of time. The operations can also comprise selecting a multiple input transmission mode for a transmission to the user equipment device based on the speed of the user equipment device, resulting in a selected transmission mode. A closed loop multiple input transmission mode can be selected in response to the speed being below a defined speed. Alternatively, an open loop multiple input transmission mode can be selected in response to the speed being above the defined speed.

A method for a channel state information (CSI) feedback comprises receiving CSI feedback configuration information for the CSI feedback including a spatial channel information indicator based on a linear combination (LC) codebook, wherein the spatial channel information comprises at least one of a downlink channel matrix, a covariance matrix of the downlink channel matrix, or at least one eigenvector of the covariance matrix of the downlink channel matrix; deriving the spatial channel information indicator using the LC codebook that indicates a weighted linear combination of a plurality of basis vectors or a plurality of basis matrices as a representation of at least one of a downlink channel matrix, a covariance matrix of the downlink channel matrix, or at least one eigenvector of the covariance matrix of the downlink channel matrix; and transmitting over an uplink channel, the CSI feedback including the spatial channel information indicator.

According to various embodiments, an electronic device may include multiple antennas, at least one antenna tuning circuit connected to at least one antenna among the multiple antennas, and at least one communication processor, wherein the at least one communication processor receives, through a first antenna among the multiple antennas, a signal transmitted from a base station based on multiple-input and multiple-output (MIMO), receives, through a second antenna among the multiple antennas, a signal transmitted from the base station based on the MIMO, and when a strength of a first signal received through the first antenna or a strength of a second signal received through the second antenna is equal to or greater than a first threshold value, determines whether an imbalance condition of the first signal and the second signal is satisfied, and adjusts, when the imbalance condition is satisfied, a setting value of the at least one antenna tuning circuit so as to reduce a difference between the strength of the first signal and the strength of the second signal. Various other embodiments are possible.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform respective measurements of one or more demodulation reference signals (DMRSs). Each of the one or more DMRSs may be associated with a repetition of a downlink transmission. Each of the one or more DMRSs may be transmitted on a narrow beam that is located within a wide beam associated with a transmission configuration indication indicated in a grant for the downlink transmission. The UE may transmit an indication of one or more of the respective measurements. Numerous other aspects are provided.

Systems, methods, apparatuses, and computer program products for channel state information (CSI) configuration and reporting for multi-transmission reception point (TRP) operation are provided. One method may include configuring a user equipment (UE), by a network node, to provide independent channel state information (CSI) feedback per transmission reception point (TRP) and to indicate additional information. The configuring of the UE may include configuring the UE with at least one of several reporting options for generating a combined channel state information (CSI) report.

Mechanisms for reduction of channel state information (CSI) feedback overhead are disclosed for full dimensional multiple input, multiple output (FD-MIMO) systems with large dimension antenna ports. In one aspect, rank-dependent CSI antenna port measurements are used in order to limit the number of antenna ports for high rank CSI reporting. Another aspect allows a user equipment (UE) to select subband feedback for aperiodic CSI porting on an uplink shared channel when the UE is to report subband quality and precoding indicators. Another aspect provides for on-demand CSI feedback that dynamically configures CSI feedback parameters. To reduce the signaling overhead, the multiple parameter sets may be pre-configured with different values for dynamic reporting parameters.

A method of a user equipment (UE) for a channel state information (CSI) feedback in a wireless communication system is provided. The method comprises receiving, from a base station (BS), CSI feedback configuration information including a number (K.sub.0) of coefficients for the CSI feedback, deriving, based on the CSI feedback configuration information, the CSI feedback including K.sub.1 coefficients that are a subset of a total of Q coefficients, wherein K.sub.1≤K.sub.0 and K.sub.0<Q, and transmitting, to the BS, the CSI feedback including the K.sub.1 coefficients over an uplink channel.

Method and apparatus for high-resolution channel state information (CSI) reporting in advanced wireless communication systems. A method of operating a user equipment (UE) includes selecting, from a full basis set comprising N bases for a plurality of v layers, an intermediate basis set comprising N′ bases that are common among the plurality of v layers and selecting, from the selected intermediate basis set, a basis subset comprising M.sub.l bases for each layer l of the plurality of v layers. The method further includes transmitting, to a base station (BS), indices of the N′ bases included in the selected intermediate basis set and indices of the M.sub.l bases included in the selected basis subsets. N, N′, and M.sub.l are positive integers; N′<N; M.sub.l<N′; l∈{0, 1 . . . , v−1}; and v is a rank value.