The design of location regions using user movement behaviors in PCS systems

The personal communications services (PCS) systems provide ubiquitous and c ustomized services. The key issue, which affects the performance of the who le system, is the location management. Current systems group cells into loc ation regions to reduce the location management cost which includes the loc ation tracking cost and the registration cost. In this paper, by considerin g users' movement behaviors, four strategies are proposed to derive locatio n regions. These strategies attempt to simultaneously reduce the location t racking cost and the registration cost. Simulations are performed to compar e the performance of these methods with the existing strategies to show the superiority of our approaches.