Abstract
Advances in mobile communication networks from 2G to 5G have brought unprecedented traffic growth, and 5G mobile communication networks are expected to be used in a variety of industries based on innovative technologies, fast not only in terms of extremely low latency but massive access devices. Various types of services, such as enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low latency communication (uRLLC), represent an increase in the number of attacks on users’ personal information, confidential information, and privacy information. Therefore, security assessments are essential to verify and cope with these various attacks. In this research, we (1) looked at 5G mobile communication network backgrounds and problems to investigate existing vulnerabilities and (2) assessed the current situation through evaluation of 5G security threats in real-world mobile networks in service.
Highlights
In February 2017, international telecommunication union (ITU) released a report that established key requirements which is minimum requirements related to technical performance for IMT-2020 for 5G mobile communication technology [1]
There is a limit to enhancing stability by utilizing existing security equipment that cannot interpret the dedicated protocols, because it uses protocols used only in mobile communication networks such as NG application protocol (NGAP), non-access stratum (NAS), GPRS tunneling protocol (GTP), diameter, and packet forwarding control protocol (PFCP) rather than general transmission control protocol (TCP)/internet protocol (IP)
When a terminal (UE) sends a network access request message to a 5G network, the value set in the User Equipment (UE) Network Capability field in that message represents the type of ciphering and integrity protection algorithm supported by the terminal
Summary
In February 2017, international telecommunication union (ITU) released a report that established key requirements which is minimum requirements related to technical performance for IMT-2020 for 5G mobile communication technology [1]. This report requested 1 GHz of minimum bandwidth, 20 Gbps of maximum data transmission rate, and 1 ms of the shortest latency time for next-generation services These are technical requirements to realize the key purposes of 5G: super-connection, ultra-fast, and ultra-low latency, and the minimal requirements to realize various 5G services. As sales of 5G-related industries are on the rise, sales of 5G wireless network infrastructures are expected to reach USD 6.8 billion in 2021 according to reports published by the Gartner as shown in Table 1 [3] In this context, the voices of users calling for a safe 5G service environment are growing, and many reviews are required before launching the services because of the possibility of inherent security threats in existing LTE communication network.
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