Achieving Efficient and Secure Handover in LEO Constellation-Assisted Beyond 5G Networks

Ubiquitous connection to modern vehicles is mandatory support diverse intelligent functions, including autonomous driving, telediagnosis, infotainment services, and others. Since the deployment of cellular access points still scarce in rural areas, low earth orbit (LEO) constellation-based communication believed provide a realistic alternative. However, due long propagation delay limited satellite on-board processing ability, design security protocols LEO constellations remain challenging. Aiming at these challenges, we propose secure user inter-satellite handover mechanism, which achieves control- user-plane key separation. Specifically, our proposed scheme exploits an identity-based encryption with proxy re-encryption achieve establishments high efficiency, it also highly efficient batch assistance stack. Detailed analysis performed demonstrate properties scheme, terms confidentiality, authentication, forward/backward Furthermore, simulation results illustrate that computational complexity overheads comparison traditional scheme.