Abstract: In a sensing session establishment process, an access point sends a first frame to a first station, where the first frame includes first information, the first information indicates a first role of the first station in a sensing session, the first role of the first station in the sensing session is a transmitter and/or a receiver, and the first station is a station participating in the sensing session in a second station associated with the access point; and the access point receives a second frame from the first station, where the second frame includes confirm information for the first frame.

Abstract: The present invention discloses a cold start operation device and control method for a diesel engine in a plateau region under a low ambient temperature, allowing a starter to drive a piston to compress the low-temperature air, by using the heated air as the fresh inlet air to introduce it into the cylinder, so that the in-cylinder temperature at the compressing TDC is increased to obtain the ignition temperature, and finally achieving the cold start of diesel engines in plateau regions. The present invention avoids complicated preheating devices, and has simple structure and reliable performance, can achieve effective cold start in different low ambient temperature environments.