COMMUNICATION METHOD, DEVICE AND SYSTEM

Abstract

Embodiments of this application relate to the field of communication technologies, and provide a communication method and apparatus, and a system, to support an R2 device with numerous features and functions in the case of a small number of reserved bits for available signaling in an existing PPDU field. The method includes: A first device receives a PPDU including an extended function field, where the PPDU is sent by a second device, and parses the PPDU. When the first device is an R2 device, the R2 device may determine configuration information of a first feature of the R2 device based on the extended function field. The first feature is a feature supported by the R2 device but not supported by an R1 device.