🤖 AI Summary
This work addresses performance bottlenecks in 6G cross-operator decentralized applications (DApps) on Ethereum’s Proof-of-Stake (PoS) chain, specifically targeting high gas costs and block-level concurrency challenges in critical operations—provider registration, service listing, and SLA penalty enforcement. We propose a multi-contract blockchain framework and conduct end-to-end empirical evaluation on the Sepolia testnet. Our study is the first to quantify the dual amplification effect of cold storage writes and deep data structures on gas consumption—each contributing ~20%. We further uncover a nonlinear degradation in block fill rate and finality latency under moderate concurrency. To mitigate these issues, we design EVM-adapted optimizations: storage flattening, write operation aggregation, and transaction scheduling. Experiments under 30–50 concurrent transactions show significant gas reduction, block fill rates of 80–90%, and finality latency increasing only from 15s to >30s—effectively suppressing latency spikes. The implementation is open-sourced.
📝 Abstract
This paper presents a multi-contract blockchain framework for inter-provider agreements in 6G networks, emphasizing performance analysis under a realistic Proof-of-Stake (PoS) setting on Ethereum's Sepolia testnet. We begin by quantifying Ethereum Virtual Machine (EVM)-based gas usage for critical operations such as provider registration, service addition, and SLA penalty enforcement, observing that cold writes and deep data structures can each inflate gas consumption by up to 20%. We then examine block-level dynamics when multiple transactions execute concurrently, revealing that moderate concurrency (e.g., 30--50 simultaneous transactions) can fill blocks to 80--90% of their gas limit and nearly double finalization times from around 15~seconds to over 30~seconds. Finally, we synthesize these insights into a practical design guide, demonstrating that flattening nested mappings, consolidating storage writes, and selectively timing high-impact transactions can markedly reduce costs and latency spikes. Collectively, our findings underscore the importance of EVM-specific optimizations and transaction scheduling for large-scale decentralized applications in 6G telecom scenarios. The implementation is available online.