The embodiment of the invention provides a communication method and device, which are applicable to Internet of Vehicles, such as V2X, LTE-V, V2V, etc. The method comprises the following steps: acquiring first frequency domain mapping pattern information comprising first reference signal mapping pattern information and first data mapping pattern information, wherein the first reference signal mapping pattern information indicates a pattern of mapping a reference signal in a frequency domain resource of one OFDM symbol, and the first data mapping pattern information indicates a pattern of mapping data in the frequency domain resource of one OFDM symbol; the first reference signal mapping pattern information is one of at least two kinds of reference signal mapping pattern information, and the first data mapping pattern information is one of at least two kinds of data mapping pattern information; mapping a reference signal and/or data on the first time-frequency resource according to thefirst frequency domain mapping pattern information; and sending the reference signal and/or data on the first time-frequency resource. According to the embodiment of the invention, the utilization rate of time-frequency resources for data transmission is ensured.