A radiation imaging apparatus includes a plurality of antennas that performs at least one of reception of control data for an image capturing unit to capture radiation image data from a data processing apparatus and transmission of the radiation image data to the data processing apparatus via wireless communication, a selection unit that selects an antenna to be used from the plurality of antennas, and a control unit that controls the selection unit. The control unit restricts a selection by the selection unit such that the selection is not performed during a period when the image capturing unit captures the radiation image data.

Provided are an uplink control receiving method, an uplink control sending method, a base station, a user equipment, and a storage medium. The method includes: specifying a beam direction used for sending an uplink control in an orthogonal frequency division multiplexing (OFDM) symbol in which the uplink control is located in a transmission unit, and receiving the uplink control according to the specified beam direction used by the uplink control; wherein the specifying the beam direction used for sending the uplink control in the OFDM symbol in which the uplink control is located in the transmission unit comprises: using by default all or at least one of beam directions used for transmitting uplink data in a previous transmission unit as the beam direction used for transmitting the uplink control, wherein the previous transmission unit refers to a transmission unit before the transmission unit.

Embodiments disclosed herein include headphone devices with spatially diverse antennas employing multiple operational modes and antenna switching policies. The headphone device may identify a current mode of operation and wirelessly communicate with at least one external device based at least in part on the current mode of operation. Further, operating in a first mode of operation, the headphone device may cause switching circuitry to selectively couple a first antenna to the common port in accordance with a first antenna switching policy. While operating in the second mode of operation, the headphone device may cause circuitry to selectively couple a second antenna to the common port in accordance with a second antenna switching policy that is different from the first antenna switching policy.

The present disclosure provides a method for determining antenna-panel switching, a user equipment and a base station. The method includes: determining antenna-panel switching indication information; and, performing antenna-panel switching according to the antenna-panel switching indication information.

A method of transmitting data of a V2X communication device is disclosed. The method of transmitting data of the V2X communication device includes measuring a plurality of specific values related to a channel state of a specific channel via a plurality of antenna ports, and each of the plurality of specific values may be measured via each of the plurality of antenna ports. Further, the V2X communication device may determine whether the specific channel is in an idle state based on the plurality of specific values, and, if the specific channel is in the idle state, simultaneously transmit service data to a plurality of adjacent devices via the specific channel using the plurality of antenna ports.

A Rugged portable device comprises: a base, a cover pivotally connected to the base, a first antenna unit, a second antenna unit, and a control unit. The first antenna unit and the second antenna unit are respectively disposed at an edge of the cover and an edge of the base, and the first antenna unit and the second antenna unit respectively have a near-field antenna and a far-field antenna. When the cover pivots relative to the base and is close to the base, the near-field antenna disposed at the cover and the near-field antenna disposed at the base generate a near-field communication (NFC) sensing signal and the near-field communication sensing signal is transmitted to the control unit. Therefore, the control unit sets up one of functions in the rugged portable device. For instance, the control unit switches off and/or switches on the far-field antenna or a peripheral unit (a keyboard or a camera).

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration message from a base station, and the configuration message may include an indication of one or more partial bands for channel state information reporting. Each partial band of the one or more partial bands may be less than a system bandwidth and include a plurality of frequency domain units associated with a precoder. The UE may select one or more antenna ports for each partial band of the one or more partial bands based on the configuration message and calculate channel state information including a linear combination of the selected one or more antenna ports for each partial band. The UE may transmit the channel state information including an indication of the selected antenna ports and linear combination coefficients for each partial band of the one or more partial bands

antennas. The receiving antenna is configured to preprocess the signal to obtain a first cache matrix and a second cache matrix. After Hadamard product operation is performed on the first and second cache matrixes, operation results of the receiving antennas are accumulated and demodulated to output demodulated information bits.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and perform an action to mitigate the collision based at least in part on identifying the collision. Numerous other aspects are provided.

Solutions pertaining to allocating antennas of a user equipment (UE) between connections using different RATs are proposed. A UE has a first connection to a first network and a second connection to a second network, each connection employing a respective radio access technology (RAT). During operation, the UE may identify a precondition of reconfiguring the connections. For example, the UE may intend to change a multi-input-multi-output (MIMO) setting of the first connection in order to release some antennas that can be allocated to the second connection to relieve a communication bottleneck thereof. Prior to reconfiguring the connections, the UE may communicate its intent to the first network. The UE may not reconfigure the connections until a confirmation is received from the first network.