Method, device, and system for resource allocation

Provided in the embodiments of the present invention are a method, device, and system for resource allocation. Said method comprises: generating resource allocation information (S201); and, by carrying said resource allocation information in a media access control protocol data unit (MAC PDU) or in physical downlink control channel (PDCCH) signaling, sending same to a user equipment, to enable said user equipment to perform uplink transmission on the basis thereof (S202). The method, device, and system provided in the embodiments of the present invention allow for the realization of rapid physical layer wireless resource allocation having a short delay.