Towards secure 5G networks: A Survey

Abstract To support various new use cases from vertical industries besides enhanced mobile broadband communication services, the 5G system aims to provide higher speed, lower latency, and massive connectivity to various devices by leveraging the evolution of 4G with the addition of new radio technology, service-based architecture, and cloud infrastructure. The introduction of new technologies, new use cases and people’s growing concerns regarding privacy issues brings new challenges to providing security and privacy protection for 5G. This paper makes an extensive review of the state of the art towards ensuring 5G security and privacy. By analyzing the lessons from the 4G security system, the requirements from new scenarios and models, the challenges resulting from new technology and paradigm, we identify typical security and privacy issues to be solved in 5G. Then, we discuss potential solutions from academia and industry to secure 5G networks from several perspectives, including the overall 5G security framework, core network, radio access network, cloud infrastructure, and the Internet of things. Finally, several key open issues and potential research directions are identified and discussed.

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