Access Authentication to IMS Systems in Next Generation Networks

摘要

IP Multimedia System (IMS) access authentication over fixed networks faces some challenges in the process of converging fixed and mobile networks. Authentication in 3GPP IMS system is bound to lower layer authentication mechanisms, hence the used protocols can not be used directly for the NGN fixed network environment. Therefore different mechanisms were proposed in standardization, we will outline the approaches and their integration into the 3GPP IMS system.