Apparatuses, methods, and systems are disclosed for performing a listen-before-talk on beams and/or panels. One method (500) includes receiving (502), at a user equipment, at least one indication to use a set of beams, a set of panels, or a combination thereof. The method (500) includes performing (504) the listen-before-talk on at least one beam of the set of beams, at least one panel of the set of panels, or a combination thereof before beginning a downlink reception, an uplink transmission, or a combination thereof. The method (500) includes performing (506) the downlink reception, the uplink transmission, or the combination thereof in response to the listen-before-talk being successful on the at least one beam of the set of beams, the at least one panel of the set of panels, or the combination thereof.

The present disclosure relates to wireless communication methods, network devices, and terminal devices. One example method includes receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to indicate a beam sweeping type, and determining, by the terminal device, the beam sweeping type based on the configuration information.

A method for determining a beam correspondence parameter of a device under test includes arranging the device under test within a measurement environment to allow an exchange of a wireless signal with the device under test. The method generating a first beam with the measurement environment for the exchange of the wireless signaland causing causing the DUT to generate, by using an antenna arrangement of the DUT, a second beam, to form a beam pair with the first beam, the beam pair including a TX beam and an RX beam and to generate a third beam corresponding to the second beam. The method includes determining the beam correspondence parameter for the beam pair using characterizing the second beam and a measurement characterizing the third beam.

Methods, systems, and devices for wireless communication are described. In some wireless communication systems, a user equipment (UE) may receive control signaling from a base station based on an uplink beam failure. The control signaling may indicate one or more uplink beams for uplink communications, and the one or more uplink beams may be decoupled from a downlink beam for downlink communications by the UE. The UE may transmit a feedback message acknowledging the one or more uplink beams for the uplink communications based on receiving the control signaling. The UE may switch from one or more current uplink beams to the one or more uplink beams indicated via the control signaling during a time period after receiving the control signaling. The UE may transmit the uplink communications using the one or more uplink beams based on the feedback message.

Systems and methods are provided for a user equipment to train a transmit beam of a transmission configuration indication (TCI) for a non-serving cell. A system may use uplink (UL) reference signal (RS) based transmit (Tx) beam training with a target non-serving cell. The Target non-serving cell may measure the UL RS and determine a best Tx beam. The system may coordinate information regarding the best Tx beam to update a TCI at the UE for the target non-serving cell.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a set of sounding reference signals (SRSs) based at least in part on a mapping configuration, the mapping configuration being associated with mapping the set of SRSs to a set of channel state information reference signals (CSI-RSs) received by the UE, and the set of CSI-RSs being received based at least in part on a set of reception settings, each associated with a respective CSI-RS of the set of CSI-RSs; determine, based at least in part on the set of reception settings, a set of transmission settings, each corresponding to a respective SRS of the set of SRSs; and transmit the set of SRSs based at least in part on the set of transmission settings. Numerous other aspects are provided.

Certain aspects of the present disclosure generally relate to wireless communication. More particularly, certain aspects of the present disclosure relate to early termination of a downlink channel repetition transmission, early termination of an uplink channel repetition, and/or determination of a plurality of beams for a repetition transmission. Numerous other aspects are provided.

A beam failure recovery method and device are provided. The method includes: after a beam failure event or a beam failure recovery event is triggered, monitoring a physical downlink control channel (PDCCH) scrambled with a C-RNTI in a first CORESET for beam failure recovery; and/or monitoring a PDCCH scrambled with a C-RNTI in a second CORESET, where resources corresponding to the first CORESET are different from resources corresponding to the second CORESET.

A user equipment (UE) is configured to vary a number of chains in uplink or downlink communications with a base station (BS). The UE includes a processor coupled to a transceiver. The processor is configured to: identify a full-chain beam for a downlink reception based on a beam sweeping; determine a number of activated chains for an uplink transmission; and determine a sub-chain uplink transmission beam.

Disclosed is a method of transmitting an uplink signal by a user equipment in a wireless communication system. The method includes receiving first information related to an uplink (UL) transmission beam, determining a listen-before-talk (LBT) beam based on the first information, and transmitting the uplink signal through the UL transmission beam based on success of LBT based on the LBT beam.