A dynamic spectrum arbitrage (DSA) system includes a dynamic spectrum policy controller (DPC) and a dynamic spectrum controller (DSC) that together dynamically manage the allocation and use of resources (e.g., spectrum resources) across different networks. As part of these operations, the DSC may generate a grid-map structure that includes a primary grid structure that identifies telecommunication cells in a geographical area, and monitor the locations of wireless devices with respect to the telecommunication cells of the grid-map structure to determine whether to initiate inter-network handover operations. The DSC may also receive updated information from the monitored wireless devices (e.g., wireless devices that attached to the resources of the lessee or lessor networks), update the grid-map structure based on the updated information to better account for changes in the availability of resources, and determine whether to initiate inter-network handover operations based on information included in the updated grid-map structure.