Abstract: Wireless communication between a mobile device or user equipment (UE) having a plurality of antennas and a base station includes signaling a reduced capability with respect to a number of antennas used for an uplink transmission. To reduce UE power consumption, e.g., when a battery is low and/or when a throughput is low, a UE may signal a lower capability, such as one that uses fewer antennas than the UE has available for an uplink transmission. The UE may then deactivate RF circuitry coupled to one or more antennas to reduce power consumption without significantly reducing performance.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a New Radio (NR) cell, an Internet protocol multimedia subsystem (IMS) configuration message. The UE may receive, from the NR cell, an instruction to fallback to a legacy cell. The UE may store a response to the IMS configuration message based at least in part on receiving the instruction to fallback. The UE may transmit, to the legacy cell and before transmitting another IMS message, the response to the IMS configuration message. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may monitor paging search spaces that correspond to beams other than a serving beam if a signal to interference plus noise ratio (SINR) of the serving beam does not satisfy a SINR threshold. The UE may stop the monitoring if a paging message in the paging search spaces has been successfully decoded. In some aspects, a UE may determine whether a paging search space that corresponds to a serving beam is a last paging search space in a first paging occasion, after the UE decoded a paging downlink control information and failed to decode a paging physical downlink shared channel on the serving beam. The UE may monitor paging search spaces, in a second paging occasion, that correspond to paging search spaces of the first paging occasion. Numerous other aspects are provided.