Edge Caching in Blockchain Empowered 6G

• 作者: Sheng Li Wen Sun Yan Zhang
• 来源期刊: 中国通信（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: COVER PAPER
• 页码范围: 1-17
• 页数: 17页
• 语种: 英文

摘要

The sixth generation (6G) of wireless cel-lular networks is expected to incorporate the latest developments in network infrastructure and emerg-ing advances in technology. In the age of 6G, edge caching technology will evolve towards intelligence, dynamics, and security. However, the security prob-lems of edge caching, including data tampering and eavesdropping, are seldomly considered in most liter-atures. In this paper, we consider the two-hop edge caching where the blockchain and physical layer se-curity technologies are adopted to prevent data from being tampered with and eavesdropped. We design blockchain-based framework to guarantee the reliabil-ity of important data such as the frequency of contents and jointly optimize content caching probability and redundancy rate to maximize the secure transmission probability. Extensive simulation shows that our op-timization scheme can significantly improve the se-cure transmission probability of edge cache network, whether facing the threat of independent eavesdrop-ping or joint eavesdropping.