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.

Abstract: This application relates to the field of channel switching technologies, and describes a channel switching method and an apparatus (e.g., used in a Wi-Fi device). In the method, a first device generates a first frame, where the first frame includes first information, the first information indicates a running mode parameter, the running mode parameter is determined based on a first signal transmitted on a first channel, and the first signal is a non-Wi-Fi signal, and the first device sends the first frame to a second device. According to the method, the first device and the second device may switch a running mode based on the running mode parameter determined based on the non-Wi-Fi signal, so that interference of the non-Wi-Fi signal can be avoided, and data transmission efficiency can be improved.

Abstract: A Wi-Fi communication method and a device are disclosed, and relate to the field of wireless communication technologies. According to the method, a first communication device is configured to: generate a physical frame, and send the physical frame. The physical frame includes signaling information and a plurality of training sequences used for channel estimation, the signaling information indicates a quantity of space-time streams and a quantity of the plurality of training sequences, and the quantity of the plurality of training sequences is greater than the quantity of space-time streams. This helps improve accuracy of an algorithm such as channel estimation in a communication system, to improve a demodulation capability of a communication device, and ensure data demodulation effect.

Abstract: In a communication method, when a bandwidth of a Wi-Fi channel increases, a first device may send first data to a second device on a frequency domain resource of an unlicensed frequency band.

Abstract: The method includes: receiving a PPDU from a first communication apparatus, where a signaling field of the PPDU includes a first user field and a second user field, the first user field includes a user identifier, the user identifier matches a user identifier of a second communication apparatus, the second user field includes a first sequence and indication information of a plurality of MCSs of the second communication apparatus, and the first sequence indicates that the second user field is extension of the first user field; and demodulating, based on the first user field and the second user field, data carried in the PPDU. In embodiments of the present disclosure, the second user field includes the indication information of the plurality of MCSs of the second communication apparatus, so that signaling overheads in the PPDU can be reduced, and transmission efficiency of data information can be improved.

Abstract: In a multi-link concurrent connection method, a first device establishes a multi-link connection to a second device via a first link set, where the first link set includes a first link and a second link. The first device establishes a multi-link connection to a third device via a second link set, where the second link set includes a third link and a fourth link, and operating frequencies of the third link and the first link are the same. Alternatively, operating frequencies of the third link, the first link, and the second link are all different.