Carolina Fortuna and Mihael Mohorcic

Abstract: Inter-technology interoperability and seamless vertical handover are still unsolved problems in the heterogeneous wireless technology environment. In this paper, we introduce a knowledge base (KB) which contains local (user terminal specific) knowledge that enables pro-active network selection for vertical handover.

We implemented a prototype which makes use of semantic technology (namely ResearchCyc) for creating the elements of the KB: the ontology, the concepts, facts and rules. We show on a case study how this system can be exploited by the Media Independent Information System (MIIS) of the IEEE 802.21 protocol.