Abstract We propose an approach for automated, potentially very fine-grain, spectrum transactions and marketplaces in order to flexibly and dynamically acquire spectrum rights in order to enable new applications and services also permitting the support of, or even guarantee, Quality-of-Service for ephemeral deployments. We describe both (multiple, by region or band) centralized marketplaces, based on traditional Information Technologies, and decentralized approaches, based on blockchains and smart contracts through either permissioneless or permissioned Distributed Ledger Technologies.
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