Blockchain for Transparent Data Management Toward 6G

The wealth of user data acts as a fuel for network intelligence toward the sixth generation wireless networks (6G). Due to heterogeneity and dynamics, decentralized management (DM) is desirable achieving transparent operations across domains, blockchain can be promising solution. However, increasing volume stringent privacy-preservation requirements in 6G bring significantly technical challenge balance transparency, efficiency, privacy blockchain-based DM. In this paper, we investigate solutions address challenge. First, explore consensus protocols scalability mechanisms blockchains discuss roles DM stakeholders architectures. Second, authentication authorization stakeholders. Third, categorize study collaborative processing. Subsequently, present research issues potential from these three perspectives. Finally, conclude paper future directions.