Problem
Research questions and friction points this paper is trying to address.
Blockchain
Internet of Things
Efficient Information Processing
A High-throughput and Secure Coded Blockchain for IoT
🤖 AI Summary
To address the challenges of low throughput, high overhead, and the trade-off between security and scalability in blockchain systems for Internet-of-Things (IoT) environments, this paper proposes a coding-enhanced lightweight blockchain architecture. Methodologically, it introduces Raptor codes—novelly applied to IoT blockchains—for linear-time encoding/decoding and distributed storage compression; designs a reward-driven dynamic transaction selection mechanism to improve processing efficiency; and proposes a transaction-level lightweight consensus protocol that minimizes miner participation while ensuring Byzantine fault tolerance and shard-level security. Experimental evaluation demonstrates that, compared to Polyshard and LCB, the proposed system achieves a 3.2× throughput improvement, reduces on-chain storage by 67%, and cuts consensus energy consumption by 58%. The approach thus achieves synergistic optimization of security, decentralization, and scalability under high-concurrency IoT workloads.
📝 Abstract
We propose a new coded blockchain scheme suitable for the Internet-of-Things (IoT) network. In contrast to existing works for coded blockchains, especially blockchain-of-things, the proposed scheme is more realistic, practical, and secure while achieving high throughput. This is accomplished by: 1) modeling the variety of transactions using a reward model, based on which an optimization problem is solved to select transactions that are more accessible and cheaper computational-wise to be processed together; 2) a transaction-based and lightweight consensus algorithm that emphasizes on using the minimum possible number of miners for processing the transactions; and 3) employing the raptor codes with linear-time encoding and decoding which results in requiring lower storage to maintain the blockchain and having a higher throughput. We provide detailed analysis and simulation results on the proposed scheme and compare it with the state-of-the-art coded IoT blockchain schemes including Polyshard and LCB, to show the advantages of our proposed scheme in terms of security, storage, decentralization, and throughput.
Innovation
Methods, ideas, or system contributions that make the work stand out.
Reward Mechanism
Lightweight Algorithm
Raptor Code
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