A Fully Distributed Location Management Scheme for Large PCS

In [1], [2], we presented the design, specification and proof of correctness of a fully distributed location management scheme for PCS networks and argued that fully replicating location information is both appropriate and efficient for small PCS networks. In this paper, we analyze the performance of this scheme. Then, we extend the scheme in a hierarchical environment so as to scale to large PCS networks. Through extensive numerical results, we show the superiority of our scheme compared to the current IS-41 standard. I. INTRODUCTION Recent advances in communication technology have created the opportunity for mobile terminals to receive many services that were, until not long ago, only available to tethered terminals. The first system to support largescale mobility was the Advanced Mobile Phone System (AMPS), a 900 MHz analog system. A new digital system, Personal Communication Services (PCS) provides voice as well as limited data services to wireless users. PCS works in the 1900 M..