Abstract: The technology of this application relates to methods and apparatuses for sending and receiving a physical layer protocol data unit. The method includes generating a physical layer protocol data unit (PPDU), where the PPDU includes a short training field, a length of a frequency domain sequence of the short training field is greater than a first length, and the first length is a length, for example, 2048, of a frequency domain sequence of a short training field that is transmitted over a 160 MHz-bandwidth channel. The method further includes sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz. According to embodiments of this application, a larger actual channel bandwidth can be achieved, and backward compatibility is implemented.

Abstract: A method in the field of networking technologies for sending a wake up packet, an apparatus, and a device. The method for sending a wake up packet is applied to a first node, wherein the first node maintains a first contention window (CW1) on a first channel, the first channel is a channel on which a main transceiver of a second node works, and the method includes generating a backoff count based on CW1, executing backoff based on the backoff count, and sending a wake up packet to the second node on a second channel when backoff ends, wherein the second channel is a channel on which a wake up receiver of the second node works.

Abstract: This application relates to the wireless communications field, for example, is applicable to a wireless local area network supporting the 802.11be standard, and in particular, to a PPDU uplink bandwidth indication method and a related apparatus. The method includes: An AP generates and sends a trigger frame. The trigger frame carries first indication information, where the first indication information is directly used to indicate or jointly indicate an EHT TB PPDU bandwidth or an uplink PPDU total transmission bandwidth. The trigger frame carries second indication information, where the second indication information is used to indicate distribution of an HE TB PPDU and/or an EHT TB PPDU in the uplink PPDU total transmission bandwidth, or directly indicate whether an EHT station transmits an HE TB PPDU or an EHT TB PPDU.

Abstract: This application is applicable to a multi-link group addressed traffic transmission method and an apparatus. A first access point (AP) of an AP multi-link device (MLD) sends group addressed traffic indication information indicating whether each AP of other APs of the AP MLD has a group addressed traffic, so that a station (STA) can learn whether the multiple APs have a group addressed traffic. In this way, each STA of the STA MLD does not need to listen to each AP whether each AP has a group addressed traffic. This reduces power consumption of the STA MLD. This application may be applied to a wireless local area network system that supports an IEEE 802.11ax next-generation Wi-Fi EHT protocol, for example, 802.11 series protocols such as 802.11be.

Abstract: A method includes: generating, by an access point AP, a first frame, where the first frame includes P station information fields, each of the P station information fields corresponds to one resource unit RU allocated to a first station STA, P is a positive integer greater than 1, each station information field further includes end indication information, and the end indication information is used to indicate whether the station information field is the last station information field in the P station information fields. The AP may allocate P RUs to the first STA, and indicate the P RUs to the first STA through the P station information fields in the first frame. Therefore, a resource allocation manner of the AP can be more flexible, a frequency selective gain of an OFDMA system can be effectively improved, and a system capacity can be increased.

Abstract: Embodiments of the present disclosure disclose example data communication methods and apparatuses. One set of operations performed by the example solutions includes sending a preset frame to an access point (AP) associated with a data communication apparatus, wherein the data communication apparatus and the AP belong to a first basic service set (BSS) having a first BSS identifier, and the preset frame comprises a second BSS identifier that identifies a second BSS. A physical layer protocol data unit (PPDU) is sent, wherein the PPDU comprises a target BSS identifier. Receiving a frame from the AP is stopped in response to the target BSS identifier being the same as the second BSS identifier and different from the first BSS identifier, as well as a preset condition being met.

Abstract: The technology of this application relates to methods and apparatuses for sending and receiving a physical layer protocol data unit. The method includes generating a physical layer protocol data unit (PPDU), where the PPDU includes a short training field, a length of a frequency domain sequence of the short training field is greater than a first length, and the first length is a length, for example, 2048, of a frequency domain sequence of a short training field that is transmitted over a 160 MHz-bandwidth channel. The method further includes sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz. According to embodiments of this application, a larger actual channel bandwidth can be achieved, and backward compatibility is implemented.

Abstract: This application provides methods and apparatuses for sending and receiving a physical layer protocol data unit. The method includes generating a physical layer protocol data unit PPDU, where the PPDU includes a short training field, a length of a frequency domain sequence of the short training field is greater than a first length, and the first length is a length, for example, 2048, of a frequency domain sequence of a short training field that is transmitted over a 160 MHz-bandwidth channel; and sending the PPDU over a target channel, where a bandwidth of the target channel is greater than 160 MHz. According to embodiments of this application, a larger actual channel bandwidth can be achieved, and backward compatibility is implemented.

Abstract: A data packet acknowledgment method, apparatus, and device, and a computer-readable storage medium. The method includes: receiving, by a first station, at least one first data packet in a plurality of data packets sent by a second station on a plurality of spectrum resources, and replying acknowledgment information of the at least one first data packet to the second station based on multi-service indication information carried in the at least one first data packet, to avoid a problem of confusion in acknowledgment information of the plurality of data packets.

Abstract: This application provides communication methods, apparatuses, and computer-readable storage media. In an example, a value of a specific element of a first access point (AP) (or a second AP) is reused in a management frame, to indicate specific elements of a plurality of APs in a multiple basic service set identifier (BSSID) set to which the first AP (or the second AP) belongs. The management frame does not need to carry a plurality of same specific elements in the multiple BSSID set. The described techniques can be applied to, for example, a wireless local area network system supporting IEEE 802.11ax next-generation Wi-Fi protocols, for example, 802.11 series protocols such as the 802.11be or the EHT.

Abstract: A wake-up packet sending method, including: obtaining, by a sending apparatus, a wake-up packet WUP, where the WUP includes a preamble sequence, and the preamble sequence includes N consecutive first sequences S, where N is an integer greater than or equal to 2 (for example, [S S]), and the N consecutive first sequences S are used to indicate that a data rate used for the WUP is a first value; or the preamble sequence includes a second sequence M, where the second sequence M is used to indicate that a data rate used for the WUP is a second value; and the second sequence M and the first sequence S are in a bit logical negation relationship; and sending the WUP, to wake up a main receiver of a receiving apparatus.

Abstract: A road congestion detection method realized by a computer includes obtaining K images taken by L cameras corresponding to a first road at a same target time point, the first road including M road sections, each road section corresponding to at least one camera, M, L, K each being a positive integer, L being greater than or equal to M, performing target detection on each image to obtain area ratio information, the area ratio information representing a ratio of an area of vehicles on a lane of a target road section to an area of the lane of the target road section, the target road section being a road section corresponding to the image in the M road sections, and determining a first congestion detection result of the first road at the target time point in accordance with K pieces of area ratio information corresponding to the M road sections.

Abstract: A road congestion detection method realized by a computer includes obtaining K images taken by L cameras corresponding to a first road at a same target time point, the first road including M road sections, each road section corresponding to at least one camera, M, L, K each being a positive integer, L being greater than or equal to M, performing target detection on each image to obtain area ratio information, the area ratio information representing a ratio of an area of vehicles on a lane of a target road section to an area of the lane of the target road section, the target road section being a road section corresponding to the image in the M road sections, and determining a first congestion detection result of the first road at the target time point in accordance with K pieces of area ratio information corresponding to the M road sections.

Abstract: Provided are a method for detecting an abnormal device, a device and a storage medium, relating to the technical field of data processing and in particular to big data technologies. The scheme is as follows: acquiring target access data generated when a user terminal in a to-be-detected region runs a target application; where the target application provides a service based on a radio frequency signal sent by a radio frequency device arranged in the to-be-detected region; and performing anomaly detection on the radio frequency device according to the target access data.

Abstract: A navigation method, an electronic device, and a storage medium, which are related to a field of artificial intelligence, such as depth learning, maps, and navigation. The specific implementation scheme includes: obtaining a parking space located in an indoor parking lot in response to an operation acquired based on a map application, generating an indoor-outdoor navigation route in the map application by taking the parking space as a destination address in the indoor-outdoor navigation route, and navigating a vehicle driven by a user to the parking space according to the indoor-outdoor navigation route.

Abstract: The present disclosure provides a parking lot recommendation method, and a navigation server for determining a score of a candidate parking lot, based on a parking difficulty level of the candidate parking lot in an target area where a destination located, quantity of remaining parking spaces, walking distance from the candidate parking lot to the destination, and driving distance from a present position of a vehicle to the candidate parking lot, and selecting an object parking lot from the candidate parking lots existing in the target area, according to the score of the candidate parking lot, and providing parking lot information of the object parking lot to a navigation terminal.

Abstract: The present disclosure provides a parking lot recommendation method, and a navigation server for determining a score of a candidate parking lot, based on a parking difficulty level of the candidate parking lot in an target area where a destination located, quantity of remaining parking spaces, walking distance from the candidate parking lot to the destination, and driving distance from a present position of a vehicle to the candidate parking lot, and selecting an object parking lot from the candidate parking lots existing in the target area, according to the score of the candidate parking lot, and providing parking lot information of the object parking lot to a navigation terminal.