Problem Analysis and Security Isolation Solution of 5G Industry Terminals Supporting Slicing

A variety of emerging application scenarios have emerged in 5G, and at the same time, it is faced with more dimensional requirements. Slicing technology can enable 5G to meet the needs of different application scenarios under the same network, and achieve the purpose of flexible resource scheduling and customized design. Terminals are an important link in 5G end-to-end slicing. The most basic capability requirements for terminals to support slicing are support for slicing protocols and perception and binding of services. Operators can provide services for different industry applications through 5G network slicing, realize flexible and efficient network resource scheduling, and meet differentiated service characteristics and security requirements. Since network slices share the same network resources, especially in industry users with high security requirements, isolation between network slices is very important. When industry users switch between different network slices, due to security isolation, the initial slice network cannot transmit the security context through the channel between slices, thus affecting the continuity of services. Aiming at this problem, this paper proposes a network slicing security isolation solution. This solution includes the 5G-GUTI information pointing to the original slicing network in the re-routed registration request, so as to provide industry users and applications with on-demand security protection capabilities to ensure efficient use of information in 5G networks.