Methods and devices for shared spectrum allocation

A non-transitory computer readable medium may store instructions that when executed by a processor direct the processor to perform a radio spectrum allocation method including processing requested radio access terms of one or more lower-tiered users and determining available radio access terms from one or more incumbents, generating a plurality of candidate radio access licenses based on the requested radio access terms and the available radio access terms, determining radio conditions of each of the plurality of candidate radio access licenses, and based on the determined radio conditions, selecting a radio access license from the plurality of candidate radio access licenses and directing the one or more lower-tiered users to use the selected radio access license or operated based on the selected radio access license.