Terminal Mobility Services in the Middleware Environment

Terminal Mobility is a much more common activity today then it was anticipated a few years back. Mobility itself is a complex phenomenon which is further complicated in a distributed application environment due to abstraction of cross-platform details and cross-realm handoffs. CORBA is a widely used middleware service used for remote method invocation in distributed applications. Vertical handoffs in cross-realm environment puts a serious constraint on effective resolution of resource names and hence CORBA utility in mobile heterogeneous environment. We propose a robust middleware architecture which takes into account multiple access services at link-layer performs optimization of connectivity services at middleware with the help of decision making support provided by application needs and network status. The proposed architecture promises resilient middleware services for terminal mobility.