Security Analysis and Improvement for Satellite and Mobile Network Integration

An important feature of 6G is to realize the integrated three-dimensional coverage of air, space, earth and sea areas, which requires the deep integration of ground network and air network on the basis of interconnection, so as to provide high-quality coverage and network services for all areas. The integration of terrestrial mobile network and non-terrestrial network will bring new security challenges. Based on the integrated architecture analysis of 3GPP, SAT5G and ETSI, this paper summarized architecture models and analyzed security risks and requirements for each model. According to the requirements, this paper proposes a protocol conversion module, an enhanced satellite access authentication algorithm, and a new wireless security negotiation mechanism to solve the security risks faced during the integration process, the analysis shows that these schemes have improved the security capability.