This disclosure provides methods, devices and systems for pre-compensation of downlink communication based on a transmission of a request for the pre-compensation from a user equipment (UE). For example, the UE may determine an impairment at the UE that has a greater severity (a greater impact on downlink communication) or is associated with a greater amount of resources for processing relative to a remainder of a set of impairments that is experienced at the UE and the UE may transmit a request for pre-compensation of the impairment by a base station. The base station may transmit feedback to the UE indicating a confirmation of pre-compensation for the impairment by the base station or to deferment of compensation for the impairment back to the UE. If the base station acknowledges pre-compensation for the impairment, the base station may pre-compensate a downlink transmission to the UE for the impairment.

A signal processing device includes: a first subarray that includes power amplifiers and phase shifters and that forms a first beam facing in a first direction; a second subarray that includes power amplifiers and phase shifters and that forms a second beam facing in a second direction; a feedback unit that feeds back at least signals that are output from the power amplifiers included in the first subarray; and a processor that is connected to the first subarray and the second subarray. The processor executes a process including: generating, based on a first feedback signal and a transmission signal output to the first subarray, a cancellation signal corresponding to an interference component applied to the second beam by the first beam; and adding the generated cancellation signal to a transmission signal output to the second subarray.

A signal processing device includes: a first subarray that includes power amplifiers and phase shifters and that forms a first beam facing in a first direction; a second subarray that includes power amplifiers and phase shifters and that forms a second beam facing in a second direction; a feedback unit that feeds back at least signals that are output from the power amplifiers included in the first subarray; and a processor that is connected to the first subarray and the second subarray. The processor executes a process including: generating, based on a first feedback signal and a transmission signal output to the first subarray, a cancellation signal corresponding to an interference component applied to the second beam by the first beam; and adding the generated cancellation signal to a transmission signal output to the second subarray.

Systems, methods, and devices can be utilized to selectively connect to a device via extremely high frequency (EHF) radio resources based on the velocity of the device. An example method includes receiving, from a user equipment (UE), a first wireless signal with a first frequency that is less than 30 Gigahertz (GHz). The example method further includes determining a velocity of the UE based on the first wireless signal and determining that the velocity of the UE is less than a threshold velocity. Based on determining that the velocity of the UE is less than the threshold velocity, a second wireless signal is transmitted to the UE with a second frequency that is greater than or equal to 30 GHz.

Systems, methods, and devices can be utilized to selectively connect to a device via extremely high frequency (EHF) radio resources based on the velocity of the device. An example method includes receiving, from a user equipment (UE), a first wireless signal with a first frequency that is less than 30 Gigahertz (GHz). The example method further includes determining a velocity of the UE based on the first wireless signal and determining that the velocity of the UE is less than a threshold velocity. Based on determining that the velocity of the UE is less than the threshold velocity, a second wireless signal is transmitted to the UE with a second frequency that is greater than or equal to 30 GHz.

A method for compensating for and calibrating a frequency offset is performed by a terminal, and includes: compensating or precompensating a target frequency according to a downlink frequency offset; obtaining an uplink residual frequency offset sent by a network device, the uplink residual frequency offset corresponding to an uplink signal sent by the terminal; and calibrating a compensation frequency or a precompensation frequency for the target frequency according to the uplink residual frequency offset.

A method for compensating for and calibrating a frequency offset is performed by a terminal, and includes: compensating or precompensating a target frequency according to a downlink frequency offset; obtaining an uplink residual frequency offset sent by a network device, the uplink residual frequency offset corresponding to an uplink signal sent by the terminal; and calibrating a compensation frequency or a precompensation frequency for the target frequency according to the uplink residual frequency offset.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect that at least a portion of reference signaling expected in a channel is not present in the channel. The UE may modify a Doppler estimation computation associated with the reference signaling based at least in part on detecting that at least the portion of the reference signaling is not present in the channel. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect that at least a portion of reference signaling expected in a channel is not present in the channel. The UE may modify a Doppler estimation computation associated with the reference signaling based at least in part on detecting that at least the portion of the reference signaling is not present in the channel. Numerous other aspects are described.

A method for performing a handover analysis is provided. The method can include obtaining base station location information for a plurality of base stations that provide a wireless network for communication with a moving vehicle, obtaining position and velocity information for the moving vehicle, and generating at least one handover metric computed from the position and velocity information and the base station location information, for use in determining a target base station to be used when performing a handover procedure to transition communication with the moving vehicle from the current base station to the target base station. This enables a variety of handover metrics to be generated that take into account the deployment of the wireless network, which can be useful in systems such as Air to Ground (ATG) systems where the moving vehicles have a relatively high velocity, and the base stations may be relatively far apart.