Abstract: This application provides a communication method and apparatus. The method includes: A first communication apparatus sends first information to a second communication apparatus. The first information may include at least one of: a first parameter, a second parameter, or a third parameter. The first parameter indicates a feedback manner of a CIR measurement report, the second parameter indicates a reference CIR tap, and the third parameter indicates configuration of a noise threshold. Therefore, in the method, at least one of the first parameter, the second parameter, or the third parameter is added to the first information, to support flexible configuration of a sensing control parameter, and help flexibly feed back the CIR measurement report. This meets requirements of different application scenarios.

Abstract: This application relates to an information exchange method in a UWB system, and an apparatus. The method includes: sending/receiving sensing control information, and determining a channel based on the sensing control information, where the channel satisfies a predefined condition. This application can be used to complete a sensing solution, for example, sensing measurement based on frequency stitching, and improve sensing performance. This application is applied to a UWB-based WPAN system, a sensing system, or the like, including 802.15 series protocols, for example, 802.15.4ab or a next-generation standard; and may further be applied to a WLAN system with a next-generation protocol (for example, 802.11be, Wi-Fi 7, or EHT) of 802.11ax, a next-generation protocol (for example, Wi-Fi 8, UHR, or 11bn) of 802.11be, Wi-Fi AI, a millimeter wave, or the like.

Abstract: Embodiments of this application provide a power converter. The power converter includes a controller, at least one bridge arm, and a first capacitor and a second capacitor that are connected in series. After the power converter is started, the controller controls a target switching transistor in each bridge arm to remain on. A target capacitor starts to be charged after the target switching transistor in each bridge arm is turned on. The target capacitor is at least one of the first capacitor or the second capacitor, and the target switching transistor is at least one of the switching transistors in each bridge arm. After the target capacitor is charged, and when a voltage across two ends of the target capacitor does not reach a voltage threshold, the controller outputs information indicating that a switching transistor short-circuit fault exists in each bridge arm.

Abstract: Embodiments of this application disclose example scheduling methods for an ultra-wideband (UWB) and related products. This application may be applied to a UWB-based wireless personal area network system, a sensing system, a positioning system, a ranging system, or a communication system, and may be further applied to a wireless local area network system that supports 802.11 series protocols such as 802.11be or Wi-Fi 7, and a next-generation protocol of 802.11be. In one example method scheduling information is generated, where the scheduling information includes a first field and a second field, the first field indicates a time unit for transmitting a UWB signal in a first period in which a UWB device transmits the UWB signal, and the second field indicates a scheduling period in which the UWB device transmits the UWB signal. The scheduling information is then sent.

Abstract: A communication method and apparatus are applied to a wireless local area network system that supports IEEE 802.11ax (Wi-Fi 6)/802.11be (Wi-Fi 7)/802.11bn (Wi-Fi 8)/Wi-Fi AI/millimeter wave/ultra-wideband UWB, or sensing, to reduce overheads of a sensing receiver feeding back a CIR tap based on a predefined feedback pattern. A sensing transmitter may send first information including a first parameter and a second parameter. The first parameter is of a first value, the first parameter indicates that the sensing receiver feeds back a CIR tap based on the predefined feedback pattern, and the second parameter indicates a quantity of CIR taps that need to be fed back in each CIR group.

Abstract: This application relates to a UWB-based PPDU transmission method and an apparatus. The method includes: A communication apparatus sends a PPDU, where the PPDU includes a first sequence, and the first sequence is any sequence shown in Table 3a, Table 3b, Table 4, Table 5a, or Table 5b. This application can be used to reduce interference between devices and support coexistence of a plurality of devices. This application is applied to a UWB-based WPAN system, a sensing system, and the like, supporting 802.15 series protocols, such as an 802.15.4ab standard or a next-generation 802.15.4ab standard; and may further be applied to a WLAN system supporting 802.11 series protocols, for example, a next-generation Wi-Fi protocol of 802.11ax, like 802.11be, Wi-Fi 7, or EHT, and for another example, a next-generation of 802.11be, Wi-Fi 8, UHR, or Wi-Fi AI.

Abstract: This application provides a communication method and apparatus. The communication method and apparatus are applied to an ultra-wideband-based wireless personal area network system, including 802.15 series protocols such as the 802.15.4a protocol, the 802.15.4z protocol, or the 802.15.4ab protocol, and further supporting a next-generation Wi-Fi protocol of IEEE 802.11ax, for example, 802.11be, Wi-Fi 7, or an extremely high throughput, and 802.11b. The method includes: A transmitting device transmits a first signal to a receiving device, where the first signal is used to indicate N bits, and a value of each bit is determined based on a magnitude relationship between average energies in two burst intervals; and the receiving device determines to wake up the receiving device based on the first signal. One-bit information is transmitted based on two burst intervals, so that the receiving device can correctly demodulate the first signal, thereby helping effectively wake up the receiving device.

Abstract: A method includes: Two communication parties exchange a control message, for indicating a frequency band overlapping rate between adjacent channels in a channel set used for frequency band stitching; and when the frequency band overlapping rate belongs to an overlapping rate set S1, the channel set is in an in-sequence channel order; or when the frequency band overlapping rate belongs to an overlapping rate set S2, the channel set is in an out-of-sequence channel order. According to this application, a better compromise between sending time and transmit power in a frequency band stitching process can be implemented. This application is applied to a UWB-based WPAN system, a sensing system, or the like, including 802.15 series protocols, for example, 802.15.4ab or a next-generation standard of 802.15.4ab. This application may be further applied to a WLAN system supporting 802.11 series protocols.

Abstract: The present disclosure provides a communication method and apparatus, an electronic device, and related products. The communication method includes: receiving, by an initiator, an advertising-response frame from a responder, where the ADV-RESP frame indicates a number N of the responder to participate in multi-millisecond ranging, N?1; and transmitting, by the initiator, a start of ranging frame to the responder according to the ADV-RESP frame, where the SOR frame is used to provide a time offset at which a first range-measurement cycle to start. Through the above solution, the initiator acquires the number of the responder to participate in MMS ranging through the ADV-RESP frame transmitted by the responder, and then transmits the SOR frame according to the number of the responder to participate in MMS ranging, thus, the initiator acquires the number of the responder to participate in MMS ranging once a responder transmits the ADV-RESP frame to the initiator.

Abstract: A channel impulse response (CIR) feedback method and an apparatus are provided. A second communication apparatus sends a second signal, and a first communication apparatus receives a first signal obtained through channel transmission on the second signal, and sends a CIR report corresponding to the first signal. The CIR report indicates a quantization result of each first CIR tap in at least one continuous time period, and an amplitude of the first CIR tap is greater than or equal to a first threshold. Based on this solution, the first communication apparatus feeds back, to the second communication apparatus, a quantization result of each CIR tap whose amplitude is greater than or equal to a threshold in the at least one continuous time period.

Abstract: This application relates to a UWB-based PPDU transmission method and an apparatus. The method includes: Two communication parties exchange a PPDU. The PPDU includes a first sequence. The first sequence is a ternary perfect sequence, and a periodic cross-correlation function of the first sequence and a second sequence belonging to a same sequence pair has a maximum of three different values. According to embodiments of this application, interference between devices can be reduced. This application is applied to a UWB-based WPAN system, a sensing system, or the like, including 802.15 series protocols, for example, the 802.15.4ab standard or a next-generation standard of 802.15.4ab. This application may be further applied to a WLAN system supporting 802.11 series protocols such as a next-generation Wi-Fi protocol of 802.11ax like 802.11be, Wi-Fi 7, or EHT, a next-generation protocol of 802.11be like Wi-Fi 8 or UHR, or Wi-Fi AI.

Abstract: A packet data protocol unit (PDPU) transmission method includes: a communication apparatus generates and sends a PPDU, where the PPDU includes a first segment and a second segment. Transmission frequency bands of the two segments are different, and an inactive segment exists between the two segments. The communication apparatus does not transmit an ultra-wideband (UWB) pulse within a duration of the inactive segment.

Abstract: A communication method includes: receiving first indication information, and sending first channel impulse response (CIR) information based on the first indication information. The first indication information indicates one or more CIR groups that need to be fed back in a CIR window, and each CIR group that needs to be fed back includes an (I)th CIR tap and a (II)th CIR tap that are in the CIR window, and all CIR taps between the (I)th CIR tap and the (II)th CIR tap. The first CIR information is the one or more CIR groups that are indicated by the first indication information and that need to be fed back.

Abstract: This application discloses a communication method for a UWB and a related product. This application can be applied to a UWB-based wireless personal area network system, a sensing system, a positioning system, a ranging system, or a communication system, and can be further applied to a wireless local area network system that supports 802.11 series protocols such as a next-generation Wi-Fi protocol of IEEE 802.11ax, for example, 802.11be or Wi-Fi 7, and a next-generation protocol of 802.11be, for example, Wi-Fi 8. The method includes: generating a first message including a first bitmap, where an ith bit in the first bitmap corresponds to an ith UWB device, and when the ith bit is set to a specified value, the ith bit indicates a location of parameter configuration information of the ith UWB device in a first DPL; and sending the first message.

Abstract: This application provides a sensing method and an apparatus, to implement sensing through frequency stitching. A second device sends a first message, and a first device receives the first message. The first message includes first information indicating a feedback policy for a sensing result corresponding to a plurality of frequency bands, and the plurality of frequency bands are used for frequency stitching. The first device sends a second message to the second device based on the first message. The second message includes a sensing result corresponding to at least one of the plurality of frequency bands. In this solution, reliability of implementing sensing through frequency stitching can be improved, and sensing performance of a UWB system can be improved.

Abstract: Provided in the present invention are a cationic photocurable composition and use thereof. The composition comprises: in parts by weight, 10-30 parts of a first cationic polymerizable compound, 10-65 parts of a second cationic polymerizable compound, 20-60 parts of an epoxy compound or/and an oxetane compound, 1-10 parts of a cationic initiator, and 2-20 parts of a pigment, wherein the first cationic polymerizable compound and the second cationic polymerizable compound have structures shown in Structural Formula I and Structural Formula II; in the formulas, R0 is selected from hydrogen, a methyl, and an ethyl, R1 represents a methyl or ethyl, n is 1 or 2, and R2 represents a methyl or ethyl; and the sum of the contents of the first cationic polymerizable compound and the second cationic polymerizable compound accounts for 30-75 wt % of the total amount of the cationic photocurable composition.

Abstract: A sensing communication method and an apparatus are provided, and may be applied to a WPAN system or a sensing system that supports UWB, for example, a wireless local area network system that supports a 802.15.4a protocol, a 802.15.4z protocol, a 802.15.4ab protocol, or the like in 802.15 series protocols. The method includes: A sensing requester sends a sensing request, where a MAC payload of the sensing request includes sensing initiator address information; and a communication apparatus that receives the sensing request forwards the sensing request when determining that an address of the communication apparatus does not match the sensing initiator address information; or the communication apparatus that receives the sensing request parses the sensing request when determining that the address of the communication apparatus matches the sensing initiator address information.

Abstract: The present invention provides a cationic photocurable composition, a paint, an article of manufacture with photocured coating, and an ink. The cationic photocurable composition comprises A1; and/or A2; B: an epoxy compound; and C: a cationic initiator. On this basis, in one aspect, when the cationic photocurable composition of the present invention is subsequently used as a paint, the wet adhesion between the coating formed of the paint to a substrate film interface is better, and the coating also has excellent abrasion resistance. In another aspect, when subsequently used as an ink in intaglio printing, the described cationic photocurable composition can also more effectively avoid the occurrence of plate fogging.

Abstract: A blockchain-based interconnected vehicle authentication system and method. During message signature process, a registered vehicle verifies a driver, and broadcasts a message. During a message verification process, a registered vehicle checks the message authentication code from a received message based on the system key, and verifies the message based on a public key of a sender of the message. During a block generation and verification process, the first local trust authority broadcasts a block, and share the block to the second local trust authorities after the block passes verification. During a block confirmation process, second local trust authority makes confirmation with regard to the block and send a confirmation result to the root trust authority, to allow the root trust authority link the block into the blockchain in response to receiving confirmation results from second local trust authorities in a quantity exceeding a predetermined number.