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6G • Core Network

Blockchain Roaming

Inter-PLMN Smart Contract Settlement

Automated multi-carrier roaming authentication and micro-billing settlement executed over decentralized, tamper-proof blockchain ledgers.

Technical Explanation

Traditional international cellular roaming relies on slow, centralized clearinghouses (like MACH and Syniverse) that take days or weeks to reconcile billing records, creating fraud risks and high transaction fees. 6G Blockchain Roaming executes smart contracts directly between telecom operators. When a foreign user connects to a local tower, cryptographic verifiable credentials authenticate the session, and smart contracts instantly settle micro-payments on a distributed ledger.

Key Functions

  • Instantaneous cryptographic mutual authentication for visiting international roamers
  • Automated real-time micro-billing settlement eliminating costly third-party clearinghouses
  • Smart contract enforcement of roaming SLA parameters (guaranteed bandwidth and latency)
  • Tamper-proof distributed ledger preventing fraudulent billing disputes between operators
  • Seamless cross-carrier network slice extension across international borders
Specifications
GSMA Blockchain Working Group PRD, 3GPP Rel-20 Study on Distributed Ledgers
Interfaces
Ledger-Roaming-APISmartContract-Settle

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