Asia-Pacific Network Operations and Management Symposium
FLchain: Federated Learning via MEC-enabled Blockchain Network
Umer Majeed, Choong Seon Hong,
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In this paper, we propose blockchain network based architecture called ``FLchain for enhancing security of Federated Learning (FL). We leverage the concept of channels for learning multiple global models on FLchain. Local model parameters for each global iteration are stored as a block on the channel-specific ledger. We introduce the notion of ``the global model state trie" which is stored and updated on the blockchain network based on the aggregation of local model updates collected from mobile devices. Qualitative evaluation shows that FLchain is more robust than traditional FL schemes as it ensures provenance and maintains auditable aspects of FL model in an immutable manner.