مقاله انگلیسی به سوی ایمن سازی صفحه کنترل شبکه های تلفن همراه 5G در برابر تهدیدات DoS
Abstract
Keywords
Introduction
Background and motivations
Performance analysis of the new 5G RRC model
Impact analysis of 5G RRC signaling threats
Conclusion
CRediT authorship contribution statement
Declaration of Competing Interest
Acknowledgment
References
Abstract
With the advent of the fifth generation (5G) technology, a plethora of revolutionary applications can now be supported. This tremendous growth will be certainly accompanied by a wider and fast-evolving security threat landscape, especially when the potential of massive devices connectivity will be fully unleashed. In this paper, we outline the security challenges faced by the 5G radio access network (5G-RAN) control plane as a result of the functional and architectural enhancements made at the radio resource control (RRC) protocol layer. We correspondingly analyze the dynamics of the new 5G RRC three-states model for a machine-type traffic pattern under an attack-free situation. Afterwards, we introduce and describe two RRC-based denial of service (DoS) attacks threatening the 5G-RAN resources availability. In the first threat scenario, the attacker maliciously manipulates the timing of state transitions in an attempt to overload the control plane. The second attack can be carried out through faking huge on-demand system information requests to prevent legitimate consumers from access to the cell and cause failed and interrupted 5G mobile services. Through numerical simulations, we measure the potential impact of these attacks on both 5G devices using the collision probability along with the access delay metrics, and on the critical gNB-centralized unit using the signaling overhead and the resource occupancy time metrics. Our observations reveal that both attacks can have disastrous effects on network stability and resiliency. Finally, some promising solutions are listed, with a special emphasis on injecting randomness into system parameters to complicate the task of designing such DoS attacks.
Introduction
1.1. Preliminary Nowadays, mobile networks experience enormous traffic volumes emanating from diverse applications mainly with the advent of the 5G technology and the launch of the first 5G New Radio (5G NR) rollouts worldwide. In order to meet the new desires of 5G customers, three new classes of services have been introduced, namely, massive machine-type communications (mMTC), enhanced mobile broadband (eMBB) and ultra-reliable low latency communications (URLLC).