QOS SCHEME BASED IEEE 802.21 MIH IN HETEROGENEOUS WIRELESS NETWO RKS (HWNS)

The vision of next generation networks is an all-IP network supporting heterogeneous wireless access technologies to accommodate a variety of services and traffic types and to allow the mobile user to roam within the service area or across the different networks without degrading the Quality of Service QoS provided. An approach to optimize these roaming procedures through the introduction of a standardized framework is followed by the IEEE 802.21 working group. This paper thus involves in Call admission control and handoff scheme to maximize system reward for network providers and to guarantee QoS-aware seamless handoff for mobile users. Thus, we propose a mobile-assisted vertical handover mechanism which exploits the IEEE 802.21 framework and support the provision of QoS and the efficient utilization of radio resources.

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