Locality based location tracking using virtually hierarchical link in personal communications services

Personal communications services (PCS) should support several times more users than cellular systems. Using the fact that many call patterns in PCS have the locality between the callers and callees, the proposed mobility management strategy is able to track the user locations efficiently in a hierarchically distributed fashion. In the proposed structure, the larger number of nodes per parent node shows better results. The virtually hierarchical link is used for fast call set up, which is useful especially in international roaming. The locality consideration effectively reduces home location register query processings.