Disclosed are a communication method and device. In the method, a first time-frequency resource and a second time-frequency resource are determined, the first time-frequency resource and the second time-frequency resource are at different second unit scheduling times within a same first unit scheduling time in a time domain and have different core frequency bands in a frequency domain. The first time-frequency resource has a first subcarrier interval in the frequency domain, and the second time-frequency resource has a second subcarrier interval that is different from the first subcarrier interval in the frequency domain. Each first unit scheduling time may include at least two second unit scheduling times. An information block is broadcast on the first time-frequency resource and the second time-frequency resource.