Abstract: A communication method and apparatus are provided, to improve MCS selection efficiency. The method includes: A first device generates first signaling, where the first signaling includes information about an MCS pattern and information about a target MCS, the MCS pattern corresponds to a plurality of candidate MCSs, the target MCS is determined from the plurality of candidate MCSs, and the target MCS includes a modulation scheme corresponding to each of a plurality of spatial streams between the first device and a second device; and the first device sends the first signaling to the second device. During MCS selection, the first device may select an MCS from the plurality of candidate MCSs corresponding to the MCS pattern. Because a number of the plurality of candidate MCSs corresponding to the MCS pattern is limited, MCS selection efficiency of the first device can be improved.

Abstract: This application provides a communication method, a communication apparatus, and a communication system. The method includes: allocating an uplink transmission resource to an LLT STA in a transmit opportunity window available for transmitting a non-low latency traffic frame, to transmit an uplink low latency traffic frame or a low latency traffic report frame, so as to implement preemption transmission of low latency traffic, ensure timely sending of the low latency traffic, and help improve user experience.

Abstract: In a power control method in a wireless local area network, a beamformer sends a null data packet (NDP) via a plurality of spatial streams to beamformees. After receiving the NDP, a beamformee determines a first parameter for power control based on RSSIs of a plurality of receive antennas when the beamformee receives the NDP, or based on SNRs of a plurality of spatial streams when the beamformee receives the NDP. The beamformee then generates a beamforming report comprising the first parameter, and sends the beamforming report to the beamformer.

Abstract: An access point (AP) generates a physical protocol data unit (PPDU), where the PPDU includes a first field, and a duration of the first field is determined by a duration in which a first station (STA) adjusts an operating mode (OM) parameter. The AP sends the PPDU, and correspondingly the first STA receives the PPDU, where the first field is carried on a first resource unit (RU), and the first RU is included in an RU corresponding to the first STA. The first STA adjusts the OM parameter based on the PPDU.

Abstract: A second AP receives a first frame from a first AP, where the first frame includes first indication information and second indication information, the first indication information indicates whether the first AP allows another AP to perform data transmission simultaneously with the first AP, the second indication information indicates a first bandwidth, and the first bandwidth is used by the first AP to receive a first acknowledgment frame; and when the first AP separately sends data to at least one first STA, the second AP separately sends data to K second STAs, where K is a positive integer. The second AP receives a second acknowledgment frame by using a bandwidth other than the first bandwidth.

Abstract: This application discloses a wireless chip, a signal receiving method, and a wireless communications apparatus, and relates to the wireless communications field, to improve a signal strength of a received signal obstructed by an object, and select a wireless radio frequency channel corresponding to an antenna with good directivity. The wireless chip includes: a first wireless radio frequency channel, coupled to a first antenna; a second wireless radio frequency channel, coupled to a second antenna; and a wireless baseband, coupled to each of the first wireless radio frequency channel and the second wireless radio frequency channel, and configured to selectively receive a signal transmitted by a transmitting device, through at least one of the first wireless radio frequency channel or the second wireless radio frequency channel. The wireless chip can be a Bluetooth chip.

Abstract: The technology of this application relates to a first device configured to perform backoff on a primary 20 MHz channel, to perform data transmission with a second device. When a first preset condition is met, the first device switches from the primary 20 MHz channel to a first channel, where the first channel is a channel preconfigured for communication between the first device and the second device, the first channel does not include the primary 20 MHz channel, and the first preset condition at least includes that the primary 20 MHz channel is in a busy state.

Abstract: A communication method includes receiving a Wi-Fi data frame from a transmitter; obtaining interference information of the Wi-Fi data frame, where the interference information comprises a proportion of interfered orthogonal frequency-division multiplexing (OFDM) symbols or a first quantity of interfered medium access control (MAC) protocol data units (MPDUs); and sending the block acknowledgment frame to the transmitter, where the block acknowledgment frame includes interference information.

Abstract: In the field of communication technologies, a communication method for a wireless fidelity (Wi-Fi) system and an apparatus provide improved performance of demodulating a Wi-Fi frame by the apparatus. The communication method for the wireless fidelity (Wi-Fi) system includes: generating a Wi-Fi frame including a first preamble field, where the first preamble field indicates a modulation and coding scheme MCS of at least one symbol in a data field in the Wi-Fi frame, an MCS order of first m symbols in the at least one symbol is less than an MCS order of another symbol, and m is a positive integer greater than or equal to 1; and transmitting the Wi-Fi frame.

Abstract: A communication method and apparatus are provided, are applied to the field of communication technologies, may be applied to a wireless local area network system supporting 802.11 series protocols such as a next-generation Wi-Fi protocol of IEEE 802.11ax like 802.11be, Wi-Fi 7, or EHT, and 802.11bn, Wi-Fi 8, UHR, Wi-Fi AI, or millimeter wave (MMW), and may be further applied to a WPAN system, a sensing system, and the like supporting UWB. A first communication apparatus generates a PPDU, and sends the PPDU. A second communication apparatus receives the PPDU, and parses the PPDU. The PPDU includes first indication information. The first indication information may indicate a first modulation scheme set and a coding rate. The first modulation scheme set is one of N modulation scheme sets obtained through classification based on W modulation schemes. Q modulation schemes in the first modulation scheme set are used to modulate the PPDU.

Abstract: This application provides a communication method and a communication apparatus, and relates to the communication field. In the method, a beacon frame sent by an AP includes at least one of first indication information and second indication information. The first indication information indicates whether a format of the beacon frame changes, or the first indication information indicates a format of the beacon frame. The second indication information indicates whether a TIM field in the beacon frame needs to be received. A STA detects at least one of the first indication information and the second indication information in the beacon frame, and receives the beacon frame based on a detection result. According to the solutions, the STA can receive the beacon frame in a corresponding format based on an indication of the AP, and does not need to detect all possible frame formats.

Abstract: A communication method includes receiving a plurality of data units, and when a first condition is met, sending an acknowledgment frame to acknowledge the received plurality of data units. The first condition includes at least one of a quantity of physical protocol layer data units (PPDU) or medium access control service data units (MSDUs) received in a currently occupied transmit opportunity is greater than or equal to a first threshold.

Abstract: This application discloses a wireless chip, a signal receiving method, and a wireless communications apparatus, and relates to the wireless communications field, to improve a signal strength of a received signal obstructed by an object, and select a wireless radio frequency channel corresponding to an antenna with good directivity. The wireless chip includes: a first wireless radio frequency channel, coupled to a first antenna; a second wireless radio frequency channel, coupled to a second antenna; and a wireless baseband, coupled to each of the first wireless radio frequency channel and the second wireless radio frequency channel, and configured to selectively receive a signal transmitted by a transmitting device, through at least one of the first wireless radio frequency channel or the second wireless radio frequency channel. The wireless chip can be a Bluetooth chip.

Abstract: A short-range communications apparatus, a chip, and a control method are disclosed. The apparatus includes: a gain unit, coupled to an antenna; a first radio frequency (RF) receive channel, coupled to the gain unit; a first baseband processor, coupled to the first RF receive channel, and configured to receive a first signal from the antenna through the first RF receive channel; a second RF receive channel, coupled to the gain unit; and a second baseband processor, coupled to the second RF receive channel, and configured to receive a second signal from the antenna through the second RF receive channel.

Abstract: A method includes receiving first signaling sent by a terminal and determining a radio channel mode supported by the terminal, where the first signaling includes a first field, and the first field indicates the radio channel mode supported by the terminal; and sending second signaling to the terminal, where the second signaling includes a second field, a target channel mode is indicated by using the second field, the second signaling indicates the terminal to use the target channel mode when the terminal sends a packet, the second signaling is sent when it is detected that there is a subchannel subject to interference on an operating channel, and the target channel mode is a mode in the radio channel mode supported by the terminal.

Abstract: Embodiments of this application provides a communication method and a communication apparatus. In an example method, a station (STA) sends a first frame to an access point (AP). The first frame includes first information, and the first information indicates that a first operation mode (OM) has been switched to. The STA transmits a second frame in the first OM. The AP and the STA can reach a consensus on that the STA has switched to the first OM.

Abstract: A communication method and apparatus are provided. The method includes: A first device may send first data to a second device on a first channel. The first channel falls within a 5 GHz frequency band, and a bandwidth of the first channel is greater than or equal to 240 MHz. In this case, the first device may transmit data through a channel that is in the 5 GHz frequency band and that has a bandwidth greater than or equal to 240 MHz, so that a throughput can be improved, and a transmission capability of the first device can be improved.

Abstract: This application relates to the field of communication technologies, and discloses example communication methods and apparatuses. One example method is used with a first multi-link device. The first multi-link sends a first frame on a first link, where the first frame includes a first field, and the first field is used to carry a first-type non-legacy long training sequence. The first multi-link device sends a second frame on a second link, where the second frame includes a second field, and the second field is used to carry a second-type non-legacy long training sequence. A start time of the first field is aligned with a start time of the second field, and an end time of the first field is aligned with an end time of the second field, that is, a boundary of the first field is aligned with a boundary of the second field.

Abstract: An antenna pairing method and an apparatus are provided. A first communication apparatus may send a measurement frame. After receiving the measurement frame, a second communication apparatus obtains, based on the measurement frame, channel information of an antenna combination corresponding to the measurement frame. Therefore, the second communication apparatus may send a feedback frame based on the channel information. After receiving the feedback frame, the first communication apparatus may learn of an antenna pairing result based on the feedback frame, and perform communication based on the antenna pairing result. This effectively reduces an increase in system overheads.

Abstract: This application relates to the communication field, and in particular, to an information indication method and a communication apparatus. This solution may be applied to a WLAN system that supports an 802.11 series protocol, for example, a next-generation Wi-Fi protocol of IEEE 802.11ax (for example, 802.11be, Wi-Fi 7, or EHT) or a next-generation protocol of 802.11be (for example, Wi-Fi 8); and may be further applied to a UWB-based wireless personal area network system. In the method, a first frame generated by a first device includes first indication information, and the first indication information may indicate whether a channel between a transmit end and a receive end meets a smoothness requirement, so that the receive end can perform channel smoothing when a first channel meets the smoothness requirement, to improve demodulation performance of the receive end.