A system for sharing a shared frequency band including one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for receiving a request for use of the shared frequency band from a first transceiving system operating at least partially in the shared frequency band, in response to receiving the request for use of the shared frequency band, determining one or more second transceiving systems within a coverage area of the first transceiving system, wherein the one or more second transceiving systems operate at least partially in the first frequency band, and sending a request to at least one of the one or more second transceiving systems to cease at least transmission in the first frequency band.