The next generation networks (5G) will use novel technological concepts to meet the requirements of broadband access everywhere, high user and device mobility, and connectivity of massive number of devices (e.g. Internet of Things (IoT)) in an ultra-reliable and affordable way. Software Defined Networking (SDN) and Network Function Virtualization (NFV) leveraging the advances in cloud computing such as Mobile Edge Computing are the most sought out technologies to meet these requirements. However, securely using these technologies and providing user privacy in future wireless networks are the new concerns. Therefore, this paper provides an overview of the security challenges in clouds, SDN and NFV, and the challenges of user privacy. Henceforth, this paper presents solutions to these challenges and future directions for secure 5G systems.
5G will provide broadband access everywhere, entertain higher user mobility, and enable connectivity of massive number of devices (e.g. Internet of Things (IoT)) in an ultrareliable and affordable way. The main technological enablers such as cloud computing, Software Defined Networking (SDN) and Network Function Virtualization (NFV) are maturing towards their use in 5G. However, there are pressing security challenges in these technologies besides the growing concerns for user privacy. In this paper, we provide an overview of the security challenges in these technologies and the issues of privacy in 5G. Furthermore, we present security solutions to these challenges and future directions for secure 5G systems.
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