Embodiments of this application relate to a communication method. In the provided communication method, an access device sends an extremely high throughput EHT operation parameter to a station device, wherein the EHT operation parameter comprises an indicator for indicating packet extension PE duration, a first value of the indicator indicates that the PE duration is 16 μs or 20 μs, and a second value of the indicator indicates that the PE duration is duration specified by a high efficiency HE operation parameter.