The invention provides a communication method and device, which can be applied to a
wireless personal
local area network system based on an ultra
wide band, including 802.15 series protocols, such as a 802.15. 4a protocol, a 802.15. 4 z protocol or a 802.15. 4 ab protocol and the like, and can also support a next generation Wi-Fi protocol of IEEE 802.11 ax, such as 802.11 be, Wi-Fi 7 or ultrahigh
throughput, such as 802.11 b. The method comprises the following steps: a sending device sends a first
signal to a receiving device, the first
signal is used for indicating N bits, the value of each bit is determined by the high-low relationship between the average energy in two
pulse burst intervals, and the receiving device determines to wake up the receiving device according to the first
signal. According to the embodiment of the invention, the one-bit information is transmitted by adopting the two
pulse burst intervals, and the receiving equipment can correctly demodulate the first signal, so that the receiving equipment can be effectively awakened.