Modeling and performance analysis of Zbr and Dbr in mobile cellular network

This paper presents a mobility model to analyze the zone-based registration (ZBR) and distance-based registration (DBR). The number of registrations for the ZBR and the DBR are also calculated in order to compare their performances. Additionally, a combined registration method called DIR (DBR with implicit registration) is presented as a means to improve the performance of the DBR. The performance of the proposed DIR is analyzed using the mobility model presented in this paper and compared with the performance of the ZBR, which is widely used in mobile communication systems. To accurately evaluate the registration and paging costs of the ZBR and the DBR, a real network hierarchy, that displays a mobile network as being made up of many visitor location register (VLR) areas, is considered. The numerical results for the various surroundings show accurate evaluations of the ZBR and the DBR in a real network hierarchy. The computational results demonstrate that, considering the network hierarchy, the proposed DIR is superior to the ZBR in most cases.