Abstract: A method includes: An access point generates an NDPA frame, where the NDPA frame includes a station information field, and the station information field includes an AID subfield indicating an association identifier AID of a station; the station information field further includes a partial bandwidth information subfield; the partial bandwidth information subfield indicates an RU that is in a bandwidth corresponding to the NDPA frame and for which the station needs to feed back channel state information; and the bandwidth corresponding to the NDPA frame is greater than 160 MHz. The access point transmits the NDPA frame.

Abstract: An apparatus that is a first station or applied to a first station is caused to send a part of a plurality of first physical protocol data units (PPDUs) to a second station over a first communication link. The plurality of first PPDUs are used to train at least one of a transmit beam of the first station or a receive beam of the second station. The apparatus is also caused to receive a first stop frame from the second station over a second communication link. The first stop frame indicates the first station to stop sending an unsent PPDU in the plurality of first PPDUs over the first communication link. The first station and the second station are multi-link devices. A frequency band on which the first communication link operates is higher than a frequency band on which the second communication link operates.

Abstract: This application relates to the field of communication technologies, and in particular, to a beamforming training method and an apparatus, to avoid a frame collision in time domain in a beamforming training process, and improve beamforming training efficiency. The method includes: A first communication apparatus (for example, an AP) receives first indication information from a second communication apparatus (for example, a STA), where the first indication information indicates an optimal transmit sector of the first communication apparatus; the first communication apparatus sends second indication information to the second communication apparatus, where the second indication information indicates a first slot group for the first communication apparatus to receive a first frame; and the first communication apparatus receives the first frame from the second communication apparatus in the first slot group in the optimal transmit sector.

Abstract: Disclosed are a communication method and apparatus, which are applied to wireless local area network systems supporting IEEE 802.11 series protocols such as a next-generation Wi-Fi protocol of 802.11ax, for example, 802.11be, Wi-Fi 7, or EHT, a next generation of 802.11be, for example, 802.11bn or Wi-Fi 8, 802.11ay, and 802.11aj, and can also be applied to UWB-based wireless personal area network systems, sensing (sensing) systems, and the like. A first communication apparatus generates and sends a PPDU. A second communication apparatus receives and parses the PPDU. Pilot values carried on pilot subcarriers corresponding to a data field in the PPDU are determined based on a bandwidth of the PPDU and Nss groups of initial pilot values. At least two groups of initial pilot values in the Nss groups of initial pilot values are different. Each group of initial pilot values may include M initial pilot values.

Abstract: This application provides example communication methods and devices to improve wireless local area network (WLAN) communication efficiency. In an example method, an access point (AP) sends first indication information. The first indication information indicates a first resource unit (RU) of a station (STA). The AP sends second indication information. The second indication information indicates whether the STA is allowed to send a physical layer protocol data unit (PPDU) based on a part of the first RU, and when the second indication information indicates that the STA is allowed to send the PPDU based on the part of the first RU. The PPDU includes a low density parity check (LDPC) extra symbol segment. The AP receives a first PPDU. A second RU occupied by the first PPDU is the part of the first RU. The first PPDU includes the LDPC extra symbol segment.

Abstract: This application provides a nominal packet padding value indication method, a determining method, and a communication apparatus. The indication method includes: A first device generates and sends a PPDU. A physical layer packet extension thresholds information field included in the PPDU includes a plurality of packet extension threshold subfield sets, and each packet extension threshold subfield set indicates a modulation threshold corresponding to an NSS of n and an RU with an index b. A value range of b does not include y, where the value of an RU index bitmask subfield corresponding to an RU with the index y is 0, and a modulation threshold corresponding to the NSS of n and the RU with the index y is a modulation threshold corresponding to an NSTS of n and an RU with an index m1.

Abstract: A communication apparatus and a communication method are disclosed. According to the communication method, a first device sends a block acknowledgment request frame to a second device. The block acknowledgment request frame is used to request the second device to send a block acknowledgment frame indicating a receiving status of an access control layer protocol data unit in first transmission. The first transmission is suspended at a first moment that is earlier than a transmission end moment when the first transmission is not suspended. The first device receives the block acknowledgment frame. The first device starts, at a second moment, to perform second transmission.

Abstract: This application relates to the field of wireless communication, for example, being applied to a wireless local area network supporting the 802.11be standard, and in particular, relates to a channel access method for a multi-link device and a related apparatus. The method includes: when a length of a first PPDU transmitted on a first link by a first multi-link device is less than or equal to a first value, skipping starting, by the first multi-link device, a medium synchronization delay timer on a second link, where the first multi-link device is not allowed to perform simultaneous transmitting and receiving on the first link and the second link.

Abstract: Embodiments of this application provide a communication method and apparatus. The communication method includes: sending a request frame to a first access point, where the request frame is used to trigger sending of a response frame, and a station is not associated with the first access point; receiving the response frame from the first access point, where the response frame includes a first transmit power for sending the response frame; determining downlink received signal quality; and sending the first transmit power and the downlink received signal quality to a second access point, where the first transmit power and the downlink received signal quality are used for a basic service set BSS transition decision, the second access point is associated with the station, and the first access point and the second access point belong to a same extended service set.

Abstract: This application discloses a resource unit combination indication method and a communication apparatus. The resource unit combination indication method includes: A transmit end generates a PPDU, and sends the PPDU. The PPDU includes a resource unit allocation subfield. The resource unit allocation subfield indicates an MRU to which a 242-tone RU corresponding to the resource unit allocation subfield belongs, and further indicates a quantity of user fields corresponding to the resource unit allocation subfield. According to the method, one or more users may be indicated to use a plurality of contiguous or noncontiguous RUs for data transmission, to improve RU allocation flexibility of a system and spectrum utilization of the system.

Abstract: This application relates to the field of wireless fidelity Wi-Fi technologies, and in particular, to a non-simultaneous transmitting and receiving capability indication method, an apparatus, and a system. In the method, a first multi-link device MLD may sequentially transmit an association request frame and a management frame to a second MLD. Correspondingly, the second MLD may receive the association request frame and the management frame from the first MLD. The association request frame includes first information, and the first information indicates a first NSTR capability between a first link and a second link. The management frame includes second information, and the second information indicates a second NSTR capability between the first link and the second link.

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: This application is applied to a wireless local area network system supporting a next-generation Wi-Fi protocol (for example, 802.11be, Wi-Fi 7, or EHT) of IEEE 802.11ax, a next-generation Wi-Fi protocol (for example, Wi-Fi 8, UHR, or 11bn) of IEEE 802.11be, Wi-Fi AI, a millimeter wave (mmWave), an ultra-wideband (UWB), or sensing (sensing). In this application, a first AP may send first TWT information. The first TWT information may indicate TWT set up between an AP in an OBSS and a non-AP STA associated with the AP. The first TWT information may carry first indication information, so that the first non-AP STA identifies the TWT set up between the AP in the OBSS and the non-AP STA associated with the AP, to assist the non-AP STA in performing communication based on a TWT mechanism.

Abstract: This application provides a channel sounding method and apparatus. The method includes: A first communication device sends a first frame to a second communication device, where the first frame is used to indicate the second communication device to perform channel sounding on a part of antennas of the first communication device. The first communication device sends a second frame to the second communication device, where the second frame is used by the second communication device to perform channel sounding on the part of antennas. The first communication device receives a third frame from the second communication device, where the third frame is used to indicate a result of performing channel sounding on the part of antennas.

Abstract: Embodiments of this application provide a channel bandwidth configuration method and a device. The method includes: receiving bandwidth configuration information of a BSS, where the bandwidth configuration information of the BSS is carried in an EHT operation element, the EHT operation element includes a channel bandwidth field, a first channel center frequency field, and a second channel center frequency field, the channel bandwidth field indicates channel bandwidth information of the BSS, the first channel center frequency field and the second channel center frequency field indicate channel location information of the BSS, and the bandwidth information is any channel bandwidth in a plurality of channel bandwidths supported by a terminal; and obtaining the channel bandwidth information and the channel location information based on the bandwidth configuration information of the BSS. This application can be applied to a Wi-Fi system that supports the 802.11 standard, for example, the 802.11be standard.

Abstract: This application relates to the field of wireless communication, is applied to a wireless local area network supporting the 802.11be standard, and in particular, relates to a time resource allocation and receiving method and a related apparatus. The method includes: A first device generates and sends a media access control MAC frame, and the second device receives the MAC frame, and then determines, based on a parsing result, that the MAC frame is a single-user trigger frame. According to embodiments of this application, a single-user trigger frame may indicate time resource allocation, to support communication in a scheduled P2P scenario and a Co-TDMA scenario.

Abstract: A receiving device is disclosed that receives a non-EHT PPDU that includes a service field and that is sent by a sending device, where the service field includes a first field whose bit quantity is m, and m?1; and the receiving device determines, based on the first field, an initialization state of a scrambling code sequence corresponding to an extremely-high throughput physical layer protocol data unit EHT PPDU, where a bit quantity of the initialization state of the scrambling code sequence is greater than the bit quantity of the first field.

Abstract: Embodiments of this application provide 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. The method includes: 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: This application provides a channel contention method and a related apparatus. The method includes: After data transmission on a first link is completed or a block acknowledgment corresponding to data is received on the first link, a first non-access point station of a first multi-link device performs clear channel assessment CCA detection on a second link in a first time period, where a start moment corresponding to the first time period is the same as a moment at which the data transmission on the first link is completed; and when the CCA detection on the second link fails, the first non-access point station performs channel contention on the second link based on a second time period.

Abstract: Embodiments of this application provide a communication method and apparatus and system configured to execute the method, which may include generating a physical layer protocol data unit (PPDU). The PPDU corresponds to at least two target users. The at least two target users include a first user and a second user. The first user is configured to perform multi-user multiple-input multiple-output (MU-MIMO) transmission with the second user over a first bandwidth. The first bandwidth is a partial bandwidth of a bandwidth useable by the first user for data transmission. Sending the PPDU.