Blockchain Based Spectrum Sharing Algorithm

Abstract

We propose a spectrum sharing algorithm based on blockchain and game theory. Unlike traditional spectrum sharing methods which use a centralized platform, our algorithm takes the decentralization and high-level trust advantages of blockchain for operators to share free spectrum and improve the utilization rate. Our system is built on consortium blockchain in which operators can trade spectrum directly. Consortium blockchain is used to authenticate members waiting to join, record information of all the transactions and ensure that it cannot be tampered by cryptography, consensus algorithm and other methods. In addition, the operators will use the game theory to specifically share spectrum between each other in our model. The operators will make their optimal sharing strategy based on game theory. Simulation results show that the proposed algorithm can effectively improve the spectrum utilization of operators and increase their revenue.