Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a blockage condition associated with at least one antenna element of a plurality of antenna elements. The UE may deactivate a set of antenna elements of the plurality of antenna elements based at least in part on the determination of the blockage condition, wherein the set of antenna elements includes the at least one antenna element. The UE may transmit, based at least in part on deactivating the set of antenna elements, an indication of a beam correspondence state. The UE may communicate using an activated set of antenna elements of the plurality of antenna elements. Numerous other aspects are described.

Disclosed are a beam measurement method, a terminal and a network device. The method comprises: a terminal receiving measurement configuration information sent by a network device, wherein the measurement configuration information is used for indicating a parameter used when measuring at least one beam; the terminal measuring the at least one beam according to the measurement configuration information to obtain a measurement result; and the terminal sending the measurement result to the network device. By means of the beam measurement method in the present application, a terminal receives measurement configuration information sent by a network device and measures a beam according to the measurement configuration information to obtain a more accurate measurement result based on the beam, so that it is beneficial for the network device to configure the terminal more efficiently according to the measurement result.

Disclosed are a data transmission method and device. The data transmission method comprises: after executing an LBT operation in a direction corresponding to at least one beam, a base station sending to a terminal a channel occupation request signal to request channel occupation; and after receiving a signal indicating that a channel is allowed to be occupied, the base station transmitting data on the beam sending the channel occupation request signal. The signal feedback method comprises: the terminal receiving the channel occupation request signal sent to the terminal by the base station on the at least one beam, and the channel occupation request signal is a signal for requesting channel occupation; and after correctly receiving the channel occupation request signal, the terminal feeding back, on the beam on which the signal is received, to the base station the signal indicating that the channel is allowed to be occupied.

A method of operating a first wireless communication device (101) communicating with a second wireless communication device (102) on a device-to-device link (114) in accordance with a pre-established beam pair is provided. The method includes communicating at least one message (4101-4103) indicative of an activation of at least one of a first transmission (181) of first reference signals (191) from the first wireless communication device (101) to the second wireless communication device (102), or a second transmission (182) of second reference signals (192) from the second wireless communication device (102) to the first wireless communication device (101). The activation of the at least one of the first transmission (181) or the second transmission (182) is for use in beam adjustment of the pre-established beam pair at the first wireless communication device (101). The method also includes participating in the at least one of the first transmission (181) or the second transmission (182) based on the communicated at least one message (4101-4103).

Embodiments of the present application are directed to a method and apparatus for beam management on sidelink. A method for wireless communication performed by a first user equipment (UE) is disclosed, the method may include: transmitting, to a second UE, an index indicating channel state information (CSI) reporting configuration information including a CSI reporting configuration item, wherein a type of CSI reporting is set in the index; and transmitting information of candidate beams of the first UE when the type of CSI reporting is set as round-trip in the index.

Apparatuses, methods, and systems are disclosed for transmitting device capability information. The method includes operating a device with multiple antenna port groups for communication between the device and a network. The method includes transmitting, by the device, device capability information to the network. The device capability information includes a number of antenna port groups of the multiple antenna port groups, a number of antenna ports for each of the antenna port groups, a maximum number of supported spatial layers for each of the antenna port groups, or some combination thereof.

A sector sweep method includes a first communication apparatus transmitting a first frame on a first frequency domain resource or a second frequency domain resource, where the first frame includes information about M training sequences, and the M training sequences are used for a sector sweep on the second frequency domain resource. The first communication apparatus performs the sector sweep with the second communication apparatus on the second frequency domain resource based on the information about the M training sequences, where a frequency corresponding to the first frequency domain resource is less than a frequency corresponding to the second frequency domain resource. The first communication apparatus performs the sector sweep with the second communication apparatus by using a new sector sweep frame (namely, a training sequence).

A data transmission method and an apparatus are disclosed. A single parameter indicates transmit beam information for uplink transmission and receive beam information for downlink transmission of a terminal device together. The data transmission method includes receiving first indication information, where the first indication information indicates a terminal device to perform data transmission based on a first parameter, and the first parameter indicates transmit beam information for uplink transmission and/or receive beam information for downlink transmission, and performing data transmission based on the transmit beam information and/or the receive beam information that are/is indicated by the first parameter.

A mechanism is proposed to reduce overhead at the expense of increasing latency for UEs with weak link gain, while the latency for most UEs may remain the same. In one aspect of this disclosure, a UE may determine the number of attempts for transmitting a RACH signal based on one or more of path loss, the transmit power of the UE, the beam correspondence at the UE, or the power of signals received during the synchronization subframe. The UE may transmit the RACH signal in the determined number of attempts. In another aspect of the disclosure, a base station may combine signals of one or more RACH attempts to decode a RACH signal. The base station may inform a UE regarding the number of RACH subframes that the base station uses for decoding the RACH signal through a random access response message.

A method for use of a wireless terminal device includes transmitting a Probe request frame by using a quasi-omni antenna pattern in a first channel if beam-forming training with a wireless base station device is not completed, selecting the wireless base station device as a connection destination if a Probe response frame corresponding to the Probe request frame is received from the wireless base station device, and performing the beam-forming training with the wireless base station device in a second channel if a time period for receiving the Probe response frame from the wireless base station device has passed.