5GaaS: DLT and Smart Contract-Based Network Slice Management in a Decentralized Marketplace

The proper orchestration of end-to-end network slices demands dynamic and meticulous resource management while addressing the complexities of multi-tenancy and multiservice scenarios. In this context, integrating network orchestrators with distributed ledger technologies has gained significant attention for its potential to implement decentralized finance marketplaces and service-level agreements using smart contracts. This approach can support the evolution of business models beyond traditional network-sharing agreements, such as crowdfunding. To this end, we propose the 5G-as-a-Service (5GaaS) system architecture, which leverages distributed ledger technologies and smart contracts to orchestrate and optimize network slicing, enabling ubiquitous computing and connectivity in 5G networks. We evaluated the feasibility of this system across various Ethereum testnets, demonstrating the cost-effectiveness, scalability, and minimal latency of the 5GaaS system, making it suitable for seamless integration into existing telecommunications frameworks.