A predictive paging scheme for IMT-2000 systems

Paging is a process to locate mobile terminals in wireless systems, which is initiated by the users calling from a fixed or mobile environment. In particular, the paging issue in IMT-2000 systems is very important to maintain the wireless services to the mobile subscribers who are allowed to roam in different systems instead of stand-alone systems. We introduce a predictive paging scheme based on the concept of a boundary location register. We develop the corresponding signaling messages to describe the call delivery procedure of intersystem roaming. Since paging costs are associated with bandwidth utilization and delays influence call setup time, they are used as metrics in evaluating the performance of the proposed paging scheme