Performance Analysis of UMTS Handover with the Help of WLAN
Proceedings of the Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks
Handover and class-based Call Admission Control policy for 4G-heterogeneous mobile networks
AICCSA '08 Proceedings of the 2008 IEEE/ACS International Conference on Computer Systems and Applications
An adaptive QoS framework for integrated cellular and WLAN networks
Computer Networks: The International Journal of Computer and Telecommunications Networking - Wireless IP through integration of wireless LAN and cellular networks
Handoffs in fourth generation heterogeneous networks
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Resource management for QoS support in cellular/WLAN interworking
IEEE Network: The Magazine of Global Internetworking
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In this paper we evaluate the handoff performance of an UMTS network with underlying tunnel-WLANs at the cell periphery while developing an adaptive QoS oriented CAC function, proposed to limit the occurrence of hard IEEE 802.11 WLAN-UMTS handovers to mobiles using real time applications. The proposed protocol is hybrid and based on the service class differentiation, the location in the heterogeneous infrastructure and a vertical handoff decision function as well. The results show that our policy achieves significant performance and gains. It maximizes the utilization of the resources available at the WLAN cells, and meets as much as possible the QoS requirement of higher priority users.