Techniques study of IMS/SIP based Lawful Interception in 3G networks

摘要: Lawful interception(LI) standard of telephone networks has technical limitations to lawfully intercept IMS/SIP-based mobile communication network subscriber who using Android and iPhone device. In addition, the standards related legal interception IMS/SIP wireless is insufficient compared systematic study development a infrastructure. The architecture proposed in ETSI(European Telecommunications Standards Institute) for seamless LI overcome traditional voice-centric techniques. This paper proposes an perform under 3G that focuses on mobility-supported environments with merging cellular Internet. We implemented simulation verify efficiency architecture, experimental results show our method achieves higher lawful rate than existing methods.