Abstract

4G communication network strive to seamlessly integrate existing heterogeneous wireless communication technologies and is fully IP-based wireless Internet which will provide access to wide range of mobile services. The challenging issue in 4G is seamless handoff, Mobility management, Security and Service between different integrated networks. This paper describes security requirements, challenges security threats, security architectures of 4G networks. Specifically, the paper describers Y-Comm security models for heterogeneous networks, Hokey Project, and ITU X.805 framework.