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Bandcoin: Using Smart Contracts to Automate Mobile Network Bandwidth Roaming Agreements

04/06/2021
by   Thomas Sandholm, et al.
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We propose a new way to share licensed spectrum bandwidth capacity in mobile networks between operators, service providers and consumers using blockchain-based smart contracts. We discuss the foundational building blocks in the contract as well as various extensions to support more advanced features such as bulk purchases, future reservations, and various auction mechanisms. Furthermore, we demonstrate how the system can be implemented with an open-source, permissioned Enterprise blockchain, Hyperledger Sawtooth. We show that our smart contract implementation can improve blockchain transaction performance, by approximately four orders of magnitude compared to serial transactions and one order of magnitude compared to parallell transactions, using PKI-driven bulk purchases of mobile access grants, paving the way for fully automated, efficient, and fine-grained roaming agreements.

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