A method includes receiving an indication to transmit a first set of signals using a first standard (e.g., Long Term Evolution) via a first set of antennas of a radio frequency device and a second set of signals using a second standard (e.g., New Radio) via a second set of antennas. The method also includes transmitting the first set of signals via the first set of antennas using a first power based on positions of the first set and second set of antennas, exposure conditions of the first set and the second set of signals on a user, and/or priorities of the first and the second set of signals. Moreover, the method includes transmitting the second set of signals via the second set of antennas using a second power based on the positions of the antennas, the exposure conditions of the signals on the user, and/or priorities of the signals.

Systems, methods, apparatuses, and computer program products for non-linear precoding are provided. One method may include combining, by a network node, of linear and non-linear precoding, for example based on specific channel state information acquisition from at least one user equipment, and generating two types of demodulation reference signals for the concatenated linear and non-linear precoding. The method may include multiplexing, by the network node, the two types of demodulation reference signals with data. A first of the two types of demodulation reference signals may be linearly precoded with one linear precoding matrix from a first-stage linear precoder, and another one of the two types may be linearly precoded with both the first-stage linear precoder and a feedforward filter in a second-stage non-linear precoder from the concatenation of linear and nonlinear precoders.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, and a base station may receive, information related to multipath richness of a channel environment and information related to antenna module capabilities associated with the UE for at least a first frequency band and a second frequency band. The base station may transmit, and the UE may receive, information indicating a multiple input multiple output (MIMO) mode in which to operate one or more antenna modules of the UE based at least in part on the information related to the multipath richness of the channel environment, the antenna module capabilities associated with the UE, and respective cell loadings in the first frequency band and the second frequency band. Numerous other aspects are provided.

Methods and apparatus are provided for switching a waveform for UL transmissions in a communication network to optimize power usage of the UE. In exemplary embodiments, the UE can use either CP-OFDM waveform or DFT-S-OFDM waveform for UL transmissions. A mechanism is provided to prevent excessive switching in environments where the channel conditions are rapidly changing Further, a signaling mechanism is provided for switching waveforms for UL transmissions using Layer 1 (L1) signaling to reduce the transmission time needed to switch between CP-OFDM and DFT-S-OFDM waveforms.

A wireless communication method for a wireless terminal. The wireless communication method comprises reporting, to a wireless network node, at least one precoding matrix group of at least one codeword according to a transmission mode, receiving, from the wireless network node, at least one codeword, and performing a transmission based on power ratio of the codeword.

A channel state information CSI report feedback method, a terminal device, and a network device. The method includes: obtaining a CSI report configuration and one or more CSI measurement resource groups corresponding to the CSI report configuration, where each CSI measurement resource group includes one or more CSI measurement resources, each CSI measurement resource group includes a channel measurement resource group and/or an interference measurement resource group, and each CSI measurement resource includes a channel measurement resource and/or an interference measurement resource; generating a CSI report based on the CSI report configuration and the one or more CSI measurement resource groups; and reporting the CSI report.

A system and method for optimizing the performance for MIMO are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI by considering envelop correlation effects.

The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by an integrated access and backhaul (IAB) node in a wireless communication system is provided. The method includes receiving multiplexing related configuration information of a mobile termination (MT) of the IAB node and a distributed unit (DU) of the IAB node from an upper IAB node, the multiplexing including spatial division multiplexing (SDM), frequency division multiplexing (FDM), and time division multiplexing (TDM), performing fallback from the FDM or the SDM to the TDM, and in response to the fallback, based on the configuration information, transmitting and receiving data of the DU of the IAB node.

An antenna adaptation is provided for a communication node as controlled by a antenna adaptation command. The antenna adaptation command adjusts the number of active transmit antennas and/or the number of active receive antennas in the communication node such as for reducing interference at the communication node.

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.