Fast and Universal Inter-Slice Handover Authentication with Privacy Protection in 5G Network

Abstract

In a 5G network-sliced environment, mobility management introduces a new form of handover called inter-slice handover among network slices. Users can change their slices as their preferences or requirements vary over time. However, existing handover-authentication mechanisms cannot support inter-slice handover because of the fine-grained demand among network slice services, which could cause challenging issues, such as the compromise of service quality, anonymity, and universality. In this paper, we address these issues by introducing a fast and universal inter-slice (FUIS) handover authentication framework based on blockchain, chameleon hash, and ring signature. To address these issues, we introduce an anonymous service-oriented authentication protocol with a key agreement for inter-slice handover by constructing an anonymous ticket with the trapdoor collision property of chameleon hash functions. In order to reduce the computation overhead of the user side in the process of authentication, a privacy-preserving ticket validation with a ring signature is designed to finish in the consensus phase of the blockchain in advance. Thanks to the edge computing capabilities in 5G, distributed edge nodes help to store the anonymous ticket information, which guarantees that the legal users can finish authentication swiftly during handover. Our scheme's performance is evaluated through simulation experiments to testify the efficiency and feasibility in a 5G network-sliced environment. The results show that compared to other authentication schemes of the same type, the overall inter-slice handover delay has been reduced by 97.94%.

Fuzzy Logic Based Handover Authentication in 5g Telecommunication Heterogeneous Networks

“…The 3GPP standards allow advanced long-term evolution (LTE-A) in 5G networks to communicate with other wireless networks, resulting in improved coverage, cost, and efficiency [1][2][3][4][5]. The delay and expense caused by authentication protocols are minimized to provide smooth and quick handovers in heterogeneous networks [6,7]. Authentication protocols should also be protected from authentication attacks.…”

An Efficient Handover Authentication Mechanism Using Deep Learning in SDNBased 5G HetNets

“…The emergence of sensor devices, data exchange, sharing, sensing and analysis of gathered data to render enhanced facilities are gaining high priorities towards daily life activities. As highly sensitive data are exchanged in several applications, privacy and security schemes are necessary for deployments [4].…”