Abstract: A method includes: A first node sends a threshold and a first packet to a second node. Correspondingly, the second node receives the threshold and the first packet from the first node. Then, the second node determines first channel state information CSI based on the first packet. If a change amount of the first CSI relative to preset CSI exceeds the threshold, the second node sends a second packet to the first node. If the change amount of the first CSI relative to the preset CSI does not exceed the threshold, the second node does not need to send the second packet to the first node. The method is applied to a radio sensing process.

Abstract: A channel state information feedback method and an apparatus to flexibly feed back channel state information, to implement balance between feedback overheads and feedback precision of the channel state information. The method includes: sending a media access control (MAC) frame, where the MAC frame includes a processing mode bitmap, every n bits in the processing mode bitmap correspond to one feedback unit, and a value of the n bits is used to indicate a processing mode of channel state information of the corresponding feedback unit; and receiving a beamforming report, where the beamforming report includes one or more feedback fields, each feedback field corresponds to one feedback unit, the feedback field includes channel state information of the corresponding feedback unit, and the channel state information included in the feedback field is processed in a processing mode indicated by the processing mode bitmap.

Abstract: Embodiments of this application disclose an interference measurement station, access point, and method, where the method includes: A second station receives, on a second link, a measurement signal sent by a first station on a first link. The second station generates a measurement result based on the received measurement signal. The second station sends the measurement result to an access point. The embodiments of this application can be used to facilitate scheduling of communication between different stations by the access point, to reduce a collision probability between stations that interfere with each other, and to improve an overall system throughput.

Abstract: A channel sounding method and an apparatus are provided. The method includes a first access point device sending a sounding request frame to a second access point device, the sounding request frame requesting the second access point device perform channel sounding, the sounding request frame includes one or both of a sounding bandwidth field or a number of spatial streams field, the sounding bandwidth field indicating a bandwidth for performing the channel sounding, the number of spatial streams field indicating a quantity of spatial streams on which the channel sounding is performed.

Abstract: This application provides a method for transmitting a wake-up packet in a communications system and a device. The communications system includes a transmit end device and a receive end device. The receive end device includes a wake-up receiver and a main transceiver. The method includes: sending, by the transmit end device, a first wake-up packet WUP to the wake-up receiver by using a first data rate; determining, by the transmit end device, a second data rate; and sending, by the transmit end device, a second WUP to the wake-up receiver by using the second data rate. The transmit end device can determine a proper data rate for sending a wake-up packet based on a specific transmission condition in a communication process, thereby improving transmission efficiency of the wake-up packet.

Abstract: A midamble indication method includes sending, by a first device, midamble indication information to a second device. A duration of a midamble indicated by the midamble indication information is greater than or equal to a threshold. The threshold is related to a processing capability of the second device. In a midamble receiving method, the second device receives the midamble according to the indication information.

Abstract: A first station generates indication information of any one of an operating channel, an operating band, or an operating channel and an operating band of a wake-up receiver in a second station. The first station sends the indication information, so that the wake-up receiver in the second station works on the indicated operating channel or the indicated operating band. The first station controls the operating channel or the operating band of the wake-up receiver in the second station by generating the indication information.

Abstract: A transmit end sends a physical layer protocol data unit (PPDU) to a receive end, where a bandwidth of the PPDU is P×10 MHz. The PPDU includes a first part of fields and a second part of fields. A quantity of tones per 10-MHz tone distribution corresponding to the first part of fields is 64, and a tone spacing is 156.25 kHz. A quantity of tones per 10-MHz tone distribution corresponding to the second part of fields is 128, and a tone spacing is 78.125 kHz. The corresponding method is applicable to 10 MHz, 20 MHz, 40 MHz, 60 MHz, so that a transmission bandwidth is increased compared with that of 802.11p, as well as a system throughput. The transmit end may transmit data by some RUs to increase a data transmission distance, or may simultaneously transmit data of different services by a plurality of RUs to improve data transmission efficiency.

Abstract: A work module includes a substrate and a transistor unit disposed on the substrate. The transistor unit includes an active layer, a source electrode, and a drain electrode. The active layer has a thickness, a first surface, and a second surface. The first surface is parallel with the second surface. The source electrode and the drain electrode at least partially overlap the active layer. The second surface contacts the source electrode and the drain electrode. A first zinc concentration exists within a first range from the second surface to a site located away from the second surface by a tenth of the thickness. A second zinc concentration exists within a second range from a site located away from the second surface by nine tenths of the thickness to the first surface. The first zinc concentration is higher than the second zinc concentration.

Abstract: The present application discloses a voice device, an interaction method of the voice device, a device and a storage medium, where the interaction method is applied to the voice device, the voice device is in communicational connection with a control device, and the interaction method includes: in response to a received wake-up message, starting a first target application indicated by the wake-up message; in response to received operation data of a user sent by the control device, generating a first control instruction according to the operation data of the user; controlling, according to the first control instruction, the first target application to perform an operation indicated by the first control instruction. As a result, remote control of the first target application of the voice device by a user is achieved, and the remote operation scenario of the voice device is also realized.

Abstract: The disclosure provides a map construction method, and the map construction method includes: periodically detecting a base world coordinate of a mobile vehicle; periodically capturing a first image of surroundings outside the mobile vehicle; periodically obtaining LiDAR data of the surroundings outside the mobile vehicle; identifying a plurality of target objects in the first image and projecting a plurality of LiDAR data points onto the first image to obtain a second image according to the LiDAR data; identifying an image coordinate of each of a plurality of projected target LiDAR data points in a selected target object; obtaining an object world coordinate of each of the target LiDAR data points according to the image coordinates, LiDAR information, and the base world coordinate; and disposing the selected target object into a high definition map according to the object world coordinates.

Abstract: This application provides methods and apparatus for sending feedback information. By binding a BAR-BA feedback manner, that is, first a request and then a feedback, when it is determined that data retransmission is performed by using a hybrid automatic repeat request (HARQ) mechanism, duration of an acknowledgment operation performed by a data receive end on retransmitted data may be increased. Alternatively, the receive end estimates duration required for feeding back a receiving status of the retransmitted data, and feeds back the duration to a transmit end. The transmit end may therefore adaptively adjust duration of the retransmitted data based on a feedback capability of the receive end, to ensure that the feedback of the receive end on the receiving status of the retransmitted data is within a short inter-frame space (SIFS).

Abstract: The present disclosure provides example data transmission method, communication apparatus, and computer-readable storage medium. One example data transmission method includes transmitting a physical layer protocol data unit (PPDU) in a first frequency band, where the first frequency band includes a first frequency domain resource which includes four subbands and a second frequency domain resource which includes Y data and pilot subcarriers, each of the four subbands includes X subcarriers, X is a positive integer greater than or equal to 996, and Y is a positive integer greater than 52.

Abstract: Embodiments of this application disclose a communication method between multi-link devices and an apparatus, and relate to the field of communications technologies, to reduce power consumption of a station multi-link device. A specific solution is as follows: A multi-link device includes a plurality of STAs, one STA operates on one of a plurality of links, and the STA determines a primary link in the plurality of links. A STA operating on the primary link in the multi-link device may receive information sent by the AP indicating whether the STA operating on the primary link has a downlink traffic, and/or information indicating whether a STA operating on a link other than the primary link has a downlink traffic. Therefore, the STA operating on the primary link may determine a link on which the STA having a downlink traffic operates in the multi-link device.

Abstract: A resource indication method includes generating, by an access point, resource mapping information, where the resource mapping information includes a plurality of mapping segments, each mapping segment is associated with a frame type, each mapping segment includes a plurality of resource indicators, and each resource indicator indicates a resource allocated to a station in a frame corresponding to a frame type associated with a mapping segment to which the resource indicator belongs, and sending, by the access point, the resource mapping information.

Abstract: Embodiments of the present invention provide a physical layer protocol data unit PPDU transmission method and a corresponding PPDU transmission apparatus. Application of the method and apparatus in the embodiments of the present invention enables a receive end to quickly determine the starting position of the feature signal sequence by means of blind detection, and ensures that the receive end quickly completes data processing and status switching.

Abstract: Embodiments of the present invention disclose a data processing method and apparatus, and belong to the field of communications technologies. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a preamble field, a data field, and a middle preamble field, and the preamble in the PPDU includes information used to indicate an insertion frequency of the middle preamble in the data field in the PPDU; and sending the PPDU. The insertion frequency of the middle preamble in the data field is indicated by using a specified field in the preamble. In this way, in different scenarios, the middle preamble may be inserted into the data field at different frequency, thereby reducing overheads of an inserted pilot and improving data transmission performance.

Abstract: A buck-boost switching regulator includes: a power switch circuit including an input switch unit and an output switch unit which switch a first terminal and a second terminal of an inductor for buck-boost conversion; at least one low dropout regulator correspondingly coupled to at least one output high side switch in the output switch unit to correspondingly convert at least one low dropout voltage into at least one output voltage; and a bypass control circuit configured to operably generate a bypass control signal according to a conversion voltage difference between the input voltage and the corresponding low dropout voltage; wherein when the corresponding conversion voltage difference is lower than a reference voltage, the bypass control signal controls a corresponding bypass switch to electrically connect the input voltage with the corresponding low dropout node.