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<p>5G introduces network slicing to deliver service-specific virtual networks on shared infrastructure. In multi-domain settings, efficient coordination is essential. However, existing approaches often overlook core saturation handling, lack secure, auditable inter-domain negotiations, and use opaque provider selection, risking suboptimal allocation and SLA violations. We present SliceChain, a distributed blockchain architecture for secure inter-provider resource sharing in 5G core slicing. SliceChain implements a Secure Resource Allocation Smart Contract (SRA-SC) that runs sealed-bid auctions over Fabric private channels and uses NLP-derived prioritization to score bids under 3GPP/ITU KPIs. In NS-3/Fabric co-simulation across diverse topologies and loads, SliceChain reduces latency by <b>22%</b> for uRLLC and <b>19%</b> for mMTC compared to DBNS, while increasing throughput and reliability. It also outperforms NSBchain, NetChain, BEAT, and TRADE-5G in latency, acceptance ratio, fairness, and resource utilization. These results show that SliceChain enables trustworthy, SLA-compliant cross-domain replacement with measurable performance gains.</p>

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Slicechain: a blockchain-based multi-domain resource orchestration in core network slicing

  • 期刊论文

  • 发表日期：

    2025年10月28日

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  • Rouzbeh Mehdikhani Saatlou,
  • Asghar Asgharian Sardroud,
  • Farshid Sadr Faridpour,
  • Saleh Yousefi

摘要

5G introduces network slicing to deliver service-specific virtual networks on shared infrastructure. In multi-domain settings, efficient coordination is essential. However, existing approaches often overlook core saturation handling, lack secure, auditable inter-domain negotiations, and use opaque provider selection, risking suboptimal allocation and SLA violations. We present SliceChain, a distributed blockchain architecture for secure inter-provider resource sharing in 5G core slicing. SliceChain implements a Secure Resource Allocation Smart Contract (SRA-SC) that runs sealed-bid auctions over Fabric private channels and uses NLP-derived prioritization to score bids under 3GPP/ITU KPIs. In NS-3/Fabric co-simulation across diverse topologies and loads, SliceChain reduces latency by 22% for uRLLC and 19% for mMTC compared to DBNS, while increasing throughput and reliability. It also outperforms NSBchain, NetChain, BEAT, and TRADE-5G in latency, acceptance ratio, fairness, and resource utilization. These results show that SliceChain enables trustworthy, SLA-compliant cross-domain replacement with measurable performance gains.