Evolving core networks from GSM to UMTS R4 version


More than 217 UMTS licenses have been issued by June 2007. Mobile operators, especially those with GSM legacy networks, prefer UMTS R4 technique to evolve their existing 2G GSM networks. UMTS R4 technique provides a smooth path to bridge legacy TDM-based network to an IP-based soft-switched network. This paper describes the basic architecture and topology… (More)


12 Figures and Tables

Cite this paper

@inproceedings{Ouyang2009EvolvingCN, title={Evolving core networks from GSM to UMTS R4 version}, author={Ye Ouyang and H. Fallah}, year={2009} }