Aerial wake-up method and wireless communication system applying same

The invention relates to an over-the-air wake-up method and a wireless communication system applying the method, and the method is characterized in that a sending end arranges a wake-up frame, the length of the wake-up frame is greater than or equal to two or more than two CAD detection periods, the wake-up frame comprises a plurality of lead code segments, and idle time exists between the lead code segments; the lead code segment is composed of a lead code and data, and the data at least comprises matching information and waiting time; the waiting time is the time from the current lead code segment to the end of the wake-up frame; the sending time of all the lead codes is combined together, and the whole CAD detection period can be covered. The lead code in the wake-up frame received by the receiving end covers the whole CAD detection period, so that wake-up failure is avoided; due to the addition of the waiting time, unnecessary waiting time of the nodes is avoided, a large amount of power consumption is sa