Security Architecture Standardization and Services in UMTS

Security is a primary concern in mobile communication systems. Wireless access is inher-ently less secure, and mobility implies higher security risks than static operation. The se-curity framework for 3G mobile systems is considered, and its principles and security re-quirements are discussed. Furthermore, the security features that are currently being stan-dardized in 3GPP, as well as the emerging 3G-security architecture are elaborated. The focus is on the various mechanisms and protocols, which are employed to provide secu-rity at different levels, and on their effect on network operation