Call admission and handover in heterogeneous wireless networks

Today's mobile communication networks support not just simple mobile voice and data services but also access to mobile Internet-based services with varying bandwidth and quality-of-service requirements. An increasing demand for wireless access to packet-based services has, in turn, driven the need for call admission and intersystem handover control strategies to make network roaming more seamless. The approach proposed here focuses on prioritization by implementing role-based network access and system-state awareness via network capacity.