The present invention relates to a wireless access system supporting a full duplex radio (FDR) transmission environment. A method for a base station for allocating resources in a wireless access system supporting FDR according to an embodiment of the present invention comprises the steps of: receiving, from a terminal, information regarding whether or not the terminal is participating in a grouping in which a plurality of terminals are configured as a group for resource allocation; and determining whether or not to group and allocating resources on the basis of the information regarding whether or not participating, wherein the information regarding whether or not participating may comprise a first item of information indicating whether the terminal can operate in full duplex (FD) in the same resource, a second item of information indicating (FD) in the same resource, a second item of information indicating FD operation is not possible in the same resource but whether an FD operation of another apparatus is supported, and a third item of information indicating whether a participation in the grouping is requested.