Methods, systems, and devices for wireless communications are described. In some systems, a first device and a second device may communicate over a communication link using a set of antenna elements. The first device may identify one or more antenna array reconfiguration trigger conditions and may correspondingly select a first subset of antenna elements for operation. The first device may transmit a message to the second device including an indication of the antenna array reconfiguration at the first device, a request for the second device to modify the second device's antenna array configuration, or both. The second device may receive the message and, based on the indication or the request, may modify its antenna array configuration. For example, the second device may select a second subset of antenna elements based on the selected first subset of antenna elements. The devices may communicate using their modified antenna array configurations.

A network node in a wireless communication network generates configuration information that configures an extent to which a wireless communication device autonomously adapts a number of different receiver components that the wireless communication device uses under different conditions at the wireless communication device, subject to minimum receiver component requirements respectively specified for the different conditions. In some examples, the different conditions may be associated with correlation of propagation channels received at the wireless communication device. The network node transmits the configuration information to the device. Correspondingly, the device autonomously adapts the number of different receiver components that the wireless communication device uses in accordance with the configuration information.

This disclosure provides methods, devices and systems for channel sounding for wireless communications. Some implementations more specifically relate to scheduling sounding reference signal (SRS) resource sets for wireless devices having more than 4 receive (RX) antenna ports. In some implementations, a base station may determine an antenna switching capability of a user equipment (UE). The antenna switching capability indicates a number of RX antenna ports of the UE. The base station schedules a number of SRS resource sets for the UE based at least in part on the number of RX antenna ports in excess of four. For example, the number of RX antenna ports may be equal to 8. As another example, the number of RX antenna ports may be equal to 6. The base station further receives, from the UE, uplink transmissions of one or more SRS resources for each of the scheduled SRS resource sets.

Various embodiments relate to an apparatus and a method for managing coexistence of multiple communication schemes by an electronic device. The electronic device may include: a first communication circuit configured to support a first frequency band; a second communication circuit configured to support at least a part of the first frequency band and a second frequency band; a first switch connected to the first communication circuit; a second switch connected to the second communication circuit and the first switch; a first antenna connected to the first switch and configured to support the first frequency band; and a second antenna connected to the second switch and configured to support the second frequency band, wherein based on the second communication circuit using the first frequency band, the second communication circuit is configured to control the first switch and the second switch to selectively connect the first antenna to one of the first communication circuit or the second communication circuit.

RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter that transmits a transmit signal through a first front end circuit, a receiver that processes a receive signal from a second front end circuit, and a feedback receiver that processes a feedback signal from the first front end circuit to generate a digital interference cancellation signal that compensates the receiver for interference arising from the transmitter.

A first unmanned aerial vehicle (UAV) test cell may be positioned at a first position and a second UAV test cell may be positioned at a second position. The first position and the second position may be designated as a pair of unbroken link positions in response to a line-of-sight (LOS) wireless communication link being unblocked between the first UAV test cell and the second UAV test cell. Otherwise, the first position and the second position may be designated as a pair of broken link positions in response to the LOS wireless communication link being blocked between the first UAV test cell and the second UAV test cell.

A base station is disclosed that includes two separated antenna arrays. In a TDD mode of operation, both arrays are used for either transmit or receive. In a sub-band full-duplex mode of operation, one array is used to transmit downlink symbols while the remaining array is used to receive uplink symbols.

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a first signal associated with a first radio access technology (RAT) and receive a second signal associated with a second RAT. In some aspects, the UE may include one or more receiver chains associated with the first RAT and at least one receiver chain associated with the second RAT. The UE may couple, via one or more switches and based at least in part on respective energy levels associated with the first signal and the second signal satisfying one or more conditions, an output from a front end of the at least one receiver chain associated with the second RAT to the one or more receiver chains associated with the first RAT. Numerous other aspects are provided.

The present disclosure provides a method and a device in a first node and a base station for wireless communication. A first node transmits K1 first-type reference signal(s), and operates a first radio signal and a second radio signal; the K1 first-type reference signal(s) is(are) transmitted by K1 first-type antenna port set(s) respectively, a target antenna port set is a first-type antenna port set in the K1 first-type antenna port set(s); a first antenna port set and a second antenna port set are respectively used for transmitting the first radio signal and the second radio signal. The disclosure makes it practical for the first node to simultaneously operate radio signals transmitted from different transmitters in beamforming scenarios by connecting a first antenna port set and a second antenna port set with a target antenna port set, thereby improving the reception and transmission efficiency and the entire performance of the system.

Wireless receiver systems and methods for user equipment are described that employ multiple receiver heads. The multiple heads can receive wireless communication signals over different receive paths from different transmission sources. The systems can scan and monitor signal quality from all receiver heads during a scheduled gap in a communication link without interfering with an ongoing communication session.