A radio frequency module includes a mounting board, a power amplifier, a plurality of transmission filters, a first switch, an output matching circuit, a low-noise amplifier, and an external-connection terminal. The mounting board includes a first principal surface and a second principal surface on opposite sides of the mounting board. The first switch switches a connection between the power amplifier and the transmission filters. The output matching circuit is connected between the power amplifier and the first switch. The low-noise amplifier is disposed on the second principal surface of the mounting board. The external-connection terminal is disposed on the second principal surface of the mounting board. The power amplifier, the output matching circuit, the first switch, and the transmission filters are disposed on the mounting board in stated order in a direction that is orthogonal to a thickness direction of the mounting board.

Certain aspects of the present disclosure provide techniques for communicating uplink and downlink transmissions when a semi-statically configured scheduling occasion is overwritten by a slot format indicator. A method performed by a user equipment (UE) includes receiving a control message from a base station (BS) activating a semi-static scheduling configuration, wherein the semi-static scheduling configuration indicates a plurality of configured grant (CG) symbols in which the UE is scheduled to transmit at least one uplink transmission to the BS. The method may further include receiving, from the BS, a slot format indicator (SFI) that overwrites a subset of CG symbols of the plurality of CG symbols to be downlink symbols, and taking one or more actions to communicate at least one downlink transmission in the downlink symbols.

The disclosure relates to a method and device for efficiently estimating a self-interference channel in an FD communication system. A method for estimating a self-interference channel by a BS in an FD communication system includes transmitting, to a first UE, information about an uplink resource where uplink reception from the first UE is muted; and estimating a self-interference channel related to downlink transmission in a period corresponding to the uplink resource where uplink reception is muted during downlink transmission to a second UE, based on the transmitted information.

A radio-frequency circuit that conveys a radio-frequency signal that is of a predetermined frequency band and modulated using 256-Quadrature Amplitude Modulation (QAM). The magnitude slope, which is the ratio of (i) the change in a magnitude ratio between an input signal and an output signal to (ii) the change in the frequency of the input signal, is at least −0.1 dB/MHz and at most 0.1 dB/MHz in the predetermined frequency band.

In an embodiment, a remote antenna unit includes a transmitter, a receiver, an antenna array, and first and second interference circuits. The transmitter is configured to generate at least one transmit signal, and the receiver is configured to process at least one receive signal. The antenna array includes one or more antennas, each of at least one of the one or more antennas coupled to the transmitter and configured to radiate a respective downlink signal in response to a respective one of the at least one transmit signal, and each of at least one of the one or more antennas coupled to the receiver and configured to generate a respective one of the at least one receive signal in response to an uplink signal. And the first and second interference circuits are each coupled to the transmitter and to the receiver and are each configured to reduce interference in each of the at least one receive signal.

A method of transmitting and receiving a signal by a user equipment (UE) in a wireless communication system is disclosure. The method includes receiving information related to beam switching from a base station (BS), generating at least one transmission beam pattern based on the information related to the beam switching, transmitting a reference signal by using the at least one transmission beam pattern, measuring a self-interference signal based on the reference signal, transmitting information about the measured self-interference signal to the BS, and receiving beam pattern information based on the measured self-interference signal from the BS. The beam pattern information indicates a beam pattern determined by the BS, and the information related to the beam switching includes information about one of whether beam switching is requested, a beam switching interval, and the number of beam switching candidates.

This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method of wireless communication includes receiving, at a user equipment (UE) from a network entity, a resource configuration message. The resource configuration message includes a first parameter corresponding to full duplex (FD) uplink (UL) and a second parameter corresponding to FD downlink (DL). The method further includes transmitting, from the UE to the network entity, a FD reference signal based on the resource configuration message. Other aspects and features are also claimed and described.

A communication method includes: a first device obtains a communication rate of a second device and obtains asymmetric rate transmission capability information supported by the second device. The first device determines, based on asymmetric rate transmission capability information supported by the first device, the asymmetric rate transmission capability information supported by the second device, a first communication rate of the first device, and the second communication rate, a first asymmetric rate transmission capability supported by both the first device and the second device. The first device determines passband frequency information corresponding to the first asymmetric rate transmission capability; and selects, from a data transmit link, a high-pass filter and/or a low-pass filter corresponding to the passband frequency information to perform filtering processing, and selects, from a data receive link, a high-pass filter and/or a low-pass filter corresponding to the passband frequency information to perform filtering processing.

A system and method for mitigating self-interference in mmWave systems. A transceiver can include a mutual precoder controller that controls both an analog/RF beamforming circuit and a digital/BB beamforming circuit to prefer beams directed along paths in the local RF environment that minimize self-interference. In other cases, a transceiver can include one or more self-interference filters to internally mitigate self-interference.

Methods, systems, and devices for wireless communications are described for a user equipment (UE) operating in a full-duplex mode to report of channel state information based on an estimate of self-interference associated with concurrent uplink and downlink transmissions using at least partially overlapping frequency resources. A base station may transmit downlink reference signals to the UE for measurement and generation of the channel state information, and the base station may use the channel state information reported by the UE to schedule the simultaneous transmission and reception such that the self-interference from full-duplex mode operations is mitigated.