Abstract: This application discloses an information determining method and an apparatus, the information determining method includes: receiving second indication information from a network device; and determining, based on a plurality of parameters indicated by the second indication information, a transmission manner of transmitting same data by using a plurality of transmission configuration indicator states (TCI-states), wherein the plurality of parameters comprise at least a quantity of TCI-states and a quantity of consecutive transmissions of the same data.

Abstract: A communication method and apparatus to enable uplink transmission of a terminal to be synchronized with a plurality of stations corresponding to one cell, and avoid a performance loss of uplink transmission. The terminal receives configuration information from a network device, wherein the configuration information includes two timing advance groups (TAGs) corresponding to one cell, and each TAG corresponds to one timing advance (TA). The terminal receives a plurality of random access response messages from the network device, wherein each random access response message is usable to indicate a TA corresponding to one of the two TAGs.

Abstract: A communication method and apparatus includes: a terminal device that receives a first message from a first network device, wherein the first message comprises handover indication information and identification information of a second network device. The handover indication information is used to indicate the terminal device to perform cell handover, and the terminal device hands over from the first network device to the second network device based on the first message.

Abstract: A communication method and apparatus are provided, to improve cross-cell beam indication performance. The method is includes: A network device generates first information and sends the first information to a terminal device, where the first information indicates to activate a first transmission configuration indicator (TCI) state of a candidate target cell; and the terminal device receives the first information, activates the first TCI state of the candidate target cell based on the first information. The terminal device can activate the first TCI state of the candidate target cell based on an indication of the network device.

Abstract: A beam configuration method, an apparatus, and a communication system. The method includes: a terminal device receives a beam configuration message, where the beam configuration message indicates a new beam. The terminal device may determine, at a time at which first duration starting from a first moment is reached, to use the new beam for communication. The first moment is a moment at which the terminal device switches to the new beam. In this case, the terminal device and the network node on which the old beam is located, and/or the terminal device and the network node on which the new beam is located can have consistent understandings on an effective time of the new beam, to achieve accurate communication.

Abstract: This application provides a method and an apparatus for sending feedback information and a method and an apparatus for receiving feedback information, to reduce resource waste in a data retransmission process.

Abstract: Embodiments of this application disclose a beam time synchronization method, for a terminal device to report, to an access network device, that time synchronization information meets a preset condition. The method in embodiments of this application includes: The terminal device determines the time synchronization information based on a time synchronization value of a first beam and a time synchronization value of a second beam. The second beam is a candidate beam or a previous serving beam, and the first beam is a current serving beam. The terminal device sends indication information to the access network device if the time synchronization information meets the preset condition, where the indication information indicates that the time synchronization information meets the preset condition.

Abstract: This application provides a communication method and apparatus. The communication method includes: receiving measurement configuration information from a network device, where the measurement configuration information is used to configure a channel measurement resource and M interference measurement resources, and M is a positive integer greater than or equal to 1; and sending a bitmap to the network device, where the bitmap includes one or more bits, each bit corresponds to one or more interference measurement resources and has a value indicating interference of the one or more interference measurement resources to the channel measurement resource, and the M interference measurement resources include the one or more interference measurement resources.

Abstract: Embodiments of this application disclose a resource measurement method and a communication apparatus, to reduce a measurement delay and reduce measurement and reporting overheads. The method in embodiments of this application includes: A terminal device receives configuration information from a network device, where the configuration information includes M measurement resource sets, each measurement resource set includes one or more measurement resources, and M is an integer greater than or equal to 1. The terminal device measures measurement resources in the M measurement resource sets based on the configuration information, and determines measurement results for K measurement resource sets of the M measurement resource sets, where K is an integer greater than or equal to 1 and less than or equal to M. The terminal device reports the measurement results for the K measurement resource sets to the network device.

Abstract: An air conditioning system, a refrigerant state detection method and a computer-readable storage medium. By adjusting first operating parameters of the air conditioning system, where the first operating parameters include a frequency of a compressor, a wind speed setting, and an opening degree of an electronic expansion valve; collecting second operating parameters of the air conditioning system at a preset time after the first operating parameters have been adjusted, where the second operating parameters include an outdoor environment temperature and operating parameters of the compressor; and determining a refrigerant state of the air conditioning system according to the second operating parameters.

Abstract: This application provides a beam failure recovery method and an apparatus. The method includes: A terminal device receives configuration information of a cell, where the configuration information of the cell includes M beam failure detection resource groups and M candidate beam resource groups, the M beam failure detection resource groups are in a one-to-one correspondence with the M candidate beam resource groups, and M is an integer. When M is an integer greater than 1, and a beam failure occurs in at least one of the M beam failure detection resource groups, the terminal device sends, by using a first media access control control element (MAC CE), beam failure recovery information corresponding to the cell. According to the beam failure recovery method provided in this application, beam failure recovery can be performed in time.

Abstract: This application provides a power control parameter determining method and an apparatus, to simplify a beam indication process and a power control parameter indication process, and reduce signaling overheads. The method and apparatus may be applied to a 5G communication system and a future communication system. The method includes: A terminal device receives, from a network device, first signaling that includes a first value of a DCI field, where the first value indicates a first TCI state in at least one activated TCI state; and obtains, based on a mapping relationship, a power control parameter set corresponding to the first TCI state. The mapping relationship includes a mapping relationship between an identifier of at least one mapping parameter subset and at least one value of the DCI field, or a mapping relationship between an identifier of at least one mapping parameter subset and the at least one activated TCI state.

Abstract: A communication method and apparatus.

Abstract: A controller for a half-bridge power circuit includes a measurement circuit, a controller circuit, a high-side delay circuit, and a low-side delay circuit. The measurement circuit connects to the half-bridge node, measures the half-bridge voltage, and generates a multi-bit status signal indicative of the measured half-bridge voltage. The controller circuit connects to the measurement circuit, and receives the status signal therefrom. The controller circuit generates at least a delay control signal based on the status signal. The high-side delay circuit connects to the controller circuit to receive the delay control signal. The high-side delay circuit provides a high-side control signal in response to the delay control signal, to switch on/off the high-side switch. The low-side delay circuit connects to the controller circuit to receive the delay control signal. The low-side delay circuit provides a low-side control signal in response to the delay control signal, to switch on/off the low-side switch.

Abstract: A humidifier includes a first housing, a second housing, a water atomization module, an essential oil delivery module, and an essential oil container. The first housing includes an outer wall including a recess. The second housing is fixedly embedded in an upper part of the recess. The water atomization module is disposed in the first housing. The water atomization module includes a first container, a water passage, and an ultrasonic atomizer. The water flows out of the first container, enters the water passage into the ultrasonic atomizer, and is atomized to produce mist. The essential oil delivery module is disposed in the second housing. The essential oil container is connected to the essential oil delivery module. The essential oil delivery module is configured to transfer essential oil from the essential oil container to the water passage so that the essential oil and the water are atomized together.

Abstract: A method for polarizing a piezoelectric film is described. In this method, a piezoelectric film is formed by using an injection deposition method. The piezoelectric film is flat adhered to a surface of a conductive substrate. A polarization process is performed on the piezoelectric film while the piezoelectric film is flat adhered to the surface of the conductive substrate by generating static electricity on the adhesion surface of the piezoelectric film, and generating the static electricity on the adhesion surface of the piezoelectric film comprises using a pressurized gas to blow the adhesion surface, and the adhesion surface of the piezoelectric film is adhered to the even surface of the conductive substrate by an electrostatic adsorption method.

Abstract: This application discloses a channel measurement method and apparatus. A network device sends downlink signaling, to indicate or activate a beam. A terminal device determines the beam indicated or activated by using the downlink signaling, determines, based on an association relationship between a beam and a channel measurement configuration, a channel measurement configuration associated with the beam, performs channel measurement based on the channel measurement configuration, to obtain a channel measurement result, and reports the channel measurement result to the network device. According to the channel measurement solution in this application, when channel quality of a new beam needs to be measured, the network device does not need dedicated signaling to indicate a channel measurement configuration associated with the new beam. When the beam is indicated or activated, the terminal device is triggered to perform channel measurement, to implement low-latency and low-overhead channel measurement.

Abstract: A sonic tool is activated in a well having multiple casings and annuli surrounding the casing. Detected data is preprocessed using slowness time coherence (STC) processing to obtain STC data. The STC data is provided to a machine learning module which has been trained on labeled STC data. The machine learning module provides an answer product regarding the states of the borehole annuli which may be used to make decision regarding remedial action with respect to the borehole casings. The machine learning module may implement a convolutional neural network (CNN), a support vector machine (SVM), or an auto-encoder.

Abstract: Embodiments of this application provide a beam management method and an apparatus, to efficiently notify a beam, avoid a complex and redundant indication instruction, and reduce signaling overheads. The method includes: A terminal device receives beam configuration information from a network device, where the beam configuration information includes configuration information of one or more common beams, and the one or more common beams include any one of the following: a separate common beam used for uplink transmission or downlink transmission and a joint common beam used for uplink transmission and downlink transmission. The terminal device receives beam activation information from the network device, where the beam activation information is used to activate some of the one or more common beams. The terminal device receives beam indication information from the network device, where the beam indication information indicates one or more of the some common beams.

Abstract: A cell handover method and an apparatus. Indication information is received from a source cell, where the indication information indicates to a first transmission configuration indicator TCI state and cell handover; initiating random access to a target cell according to the indication information. In response to first response information returned by the target cell being received, second response information is returned to the source cell, where the second response information indicates that the first TCI state is successfully activated. Cell handover is implemented through beam switch to reduce a delay of a terminal device during the cell handover. The terminal device returns the second response information to the source cell only after receiving the first response information returned by the target cell.