Optimization of Two-Stage Consensus and Storage of Blockchain-Based Spectrum Sensing in Cognitive Radio Networks

Optimization of two-stage consensus and storage of blockchain-based spectrum sensing is proposed for cognitive radio networks (CRNs) to address the issues of high latency and storage requirements that existing blockchain-based spectrum sensing systems face during the execution of sensing tasks and data collection. A two-stage spectrum sensing consensus mechanism based on identity multirandom number aggregated signature is proposed to reduce the latency of spectrum consensus. Additionally, a storage optimization scheme based on storage gain is introduced to reduce the storage requirements of blockchain systems. Results show that the proposed scheme can greatly reduce the communication and storage overhead.