Mobility model and performance analysis for zone-based registration in CDMA mobile communication system

In this paper, we describe a mobility model and analysis for zone-based reg istration in the CDMA mobile communication system. We first propose a simpl e and proper mobility function for single zone-based registration. We estab lish the circumstances of multiple zone-based registration, which is based on the mobility function of single zone-based registration, and perform com puter simulations for the circumstances. Using the simulation results, we o btain the optimal number of zones, N, that minimizes signaling traffic on r adio channels. Results show that, in most cases, N is 2. We also show that multiple zone-based registration has lower signaling traffic on radio chann els than single zone-based registration, and zone-based registration must b e implemented as multiple zone-based registration.