Fairness Oriented Spectrum Auction for Blockchain-assisted Dynamic Spectrum Sharing

Leveraging the unique characteristics of blockchain, secure and efficient dynamic spectrum sharing (DSS) can be achieved, which has been regarded as a promising solution to meet the spectrum requirement in future wireless communication systems. However, proper incentive mechanism with guaranteed fairness is essential for blockchain-enabled DSS. In this paper, we investigate fairness-oriented spectrum auction, where multiple access points can share resources on the blockchain platform with smart contract. Specifically, we propose a fairness factor to adjust users’ satisfaction considering both the historical spectrum allocation results and current spectrum auction results. Then, an improved virtual auction mechanism is proposed to balance the long-term satisfaction of participants. Simulation results show that the multi-round fairness-based auction algorithm (FBAA) can enhance the fairness of spectrum allocation and increase the number of radio users served.