Abstract: Embodiments of this application describe a communication method, a first station (STA), a second STA, and an access point (AP). The method includes: determining, by a first STA, a first basic service set (BSS) color; generating, by the first STA, a data frame when the first station STA and a second STA perform D2D transmission, where the data frame includes the first BSS color; and sending, by the first STA, the data frame to the second STA. The first BSS color is carried in the D2D data frame, so that when receiving the data frame, another receiving station in a BSS to which the first STA and the second STA belong can determine that the frame is a frame from a neighboring cell.

Abstract: The technology of this application relates to a data transmission method and apparatus. The method includes sending, by a first device, first indication information in a first frequency band, and the first indication information is indicative of a resource in a second frequency band, used by the first device and the second device to perform data transmission, performing, by the first device, based on the scheduling information, data transmission with the second device, using the resource in the second frequency band. The data transmission method and apparatus in embodiments of this application can schedule a device based on a plurality of frequency bands to perform data transmission. In this way, a larger bandwidth is used, a throughput rate is increased, and system performance is improved.

Abstract: A power decentralized electric locomotive apparatus includes an electric locomotive and a plurality of muck trucks. The electric locomotive and the plurality of muck trucks are connected in sequence, and a mater drive motor is fixedly mounted on the electric locomotive. A slave drive motor is fixedly mounted on at least one of the muck trucks; a torque of the slave drive motor is smaller than a torque of the mater drive motor; and the slave drive motor cooperates with the mater drive motor, to enable the muck truck to travel on rails and reduce drive power and self-weight of the electric locomotive.

Abstract: Various embodiments provide a data transmission method and apparatus. In those embodiments, a first device sends first indication information in a first frequency band, where the first indication information is indicative of a resource in a second frequency band, used by the first device and the second device to perform data transmission. In those embodiments, the first device performs, based on the scheduling information, data transmission with the second device, using the resource in the second frequency band. Those embodiments can schedule a device based on a plurality of frequency bands to perform data transmission. In this way, a larger bandwidth is used, a throughput rate is increased, and system performance is improved.

Abstract: The present invention discloses a method, system, storage medium and device for evaluating adaptive reuse of existing residential buildings. The method includes: substituting the research data of a to-be-evaluated residential building into an adaptability evaluation system to obtain an evaluation result, and determining a reuse mode of the to-be-evaluated residential building at a region position of a reuse mode decision-making matrix according to the evaluation result; the research data includes current quality data and reuse value data; each region of the reuse mode decision-making matrix corresponds to one reuse mode for existing residential buildings. According to the present invention, adaptability index data of the existing residential buildings are extracted through sample analysis based on a mathematical model, so that the evaluation value of the adaptability is obtained, and the most suitable reuse mode is determined by means of the reuse mode matrix.