GLOBAL MOBILITY MANAGEMENT BY REPLICATED DATABASES IN PERSONAL COMMUNICATION-NETWORKS

This paper explores the use of replicated databases for management of customer data (e.g., mobility data, call routing logic) in global, int elligent, and wireless networks. We propose and analyze two, full and partial, data replication schemes-which are compatible with industry p rotocol standards-and compare them with the traditional, centralized d atabase scheme. By identifying a see of key teletraffic and mobility p arameters, we develop a modeling framework based on queueing models an d apply it to assess the relative performance and merits of these sche mes, The paper also addresses some implementation issues. Numerical re sults reveal that the full replication scheme outperforms the centrali zed one over a wide range of the parameters considered in this study, Furthermore, if some customer data-such as location data for highly mo bile customers in wireless networks-change frequently, and if each cal l launches multiple queries inter the databases, the partial replicati on scheme offers further performance improvement, Tn general, however, the choice of tile database design would depend on the specific chara cteristics of the service and user behavior under consideration.