Speed-Based Mobility Management for Heterogeneous Wireless Networks Interworking

A heterogeneous wireless network is constructed by a variety of wireless networks. More and more researches try to achieve seamless handoff between WWAN and WLAN in accordance with all layers. It is anticipated that the future wireless mobile Internet will be a pluralistic wireless environment. Majority of traditional location management schemes are based on paging mobile terminal within each domain area. This paper proposes a speed-based mobility management scheme to minimize the paging overhead cost and the resource reservation. Our proposed scheme consists of three main approaches. First, the mobile terminal location update is based on the movement speed, and this information will be transmitted to the system for dynamic management. Second, the required bandwidth of an application is dependent on the selection of the most suitable wireless network dynamically. Lastly, the classification of applications is applied to avoid handoff failures. The simulation results show about 40% reduction in signaling cost and significant paging delay improvement.