Implementation and evaluation of spectrum sharing technology using smart contracts

Abstract

To achieve more advanced mobile communication systems such as 5G, utilizing existing spectrum resources is effective. Therefore, many studies on spectrum sharing technology are being conducted. On the other hand, blockchain is getting attention as a highly reliable management method for distributed data. Blockchain is expected to be used in many ways other than financial services, and proposals have been made to use it for spectrum sharing. This paper gives an overview of leading spectrum sharing technology researches using blockchain. It also introduces the autonomous distributed dynamic spectrum sharing we proposed. Then we propose such spectrum sharing technology using smart contracts. This technology was achieved in an open environment, which has been attracting attention recently. This paper shows how to implement the spectrum sharing system in O-RAN environment. We also propose to use CA to utilize the shared spectrum in O-RAN environment. We implemented smart contracts and evaluated it. This paper discusses its use cases and the impact of the features related to smart contracts based on the evaluation results.