A Novel Mobility Management Scheme for Convergence of Heterogeneous Networks

With fast development of wireless technologies, we are getting more and more focused on the issue how to provide ubiquitous services over various current wireless networks, namely convergence of heterogeneous networks. In the environment of heterogeneous wireless networks, it is indispensable to support seamless mobility between these wireless networks, for the purpose of perfect services provision. Traditional mobility management has already become incapable to support mobility in heterogeneous wireless networks. Considering from application layer, network layer and wireless access layer comprehensively, this paper presents a novel mobility management scheme based on cross-layer theory. And then this scheme is detailed with the example of interworking among WLAN, GSM/GPRS and UMTS.