A Survey on C-RAN Security

Feng Yu Tian, Peng Zhang, Zheng Yan

Research output: Contribution to journalReview Articlepeer-review

26 Citations (Scopus)
283 Downloads (Pure)


While 4G is speeding up its steps towards global markets, 5G has initiated its full development to satisfy an increasing demand on mobile data traffic and big data bandwidth. Centralized data processing, collaborative radio, real-time cloud infrastructure and Cloud Radio Access Network (C-RAN), along with their excellent advantages are being sought by more and more operators to meet end-user requirements. As a promising mobile wireless network architecture, compared with traditional RAN, C-RAN has incomparable advantages in terms of low power consumption, reduced Base Station (BS) numbers, and economic capital and operating expenditure. It can also improve network capacity and BS utilization rate. Recently, C-RAN security has aroused special attention and concern. However, the literature still lacks an overall review on it in order to guide current and future research. In this paper, we first overview the architecture, deployment scenarios and special characteristics of C-RAN. We then provide a thorough review on the existing security studies in the field of C-RAN based on its three logic layers and corresponding security threats and attacks. Particularly, we discuss whether the current literature can satisfy the expected security requirements in C-RAN. Based on this, we indicate open research issues and propose future research trends.

Original languageEnglish
Pages (from-to)13372-13386
Number of pages15
JournalIEEE Access
Publication statusPublished - 21 Jul 2017
MoE publication typeA2 Review article in a scientific journal


  • 5G
  • Cloud Radio Access Network (C-RAN)
  • Security
  • Security Threats
  • Trust


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