Mobility models for cellular systems: cell topography and handoff probability

In this paper we develop models that incorporate general mobility patterns that are induced by the cell topography (e.g., road layout, street orientation, density of intersections). In particular, we study the effect of the different mobility patterns on the handoff probability. The mobility patterns are induced by common terrains such as random, Manhattan, circular and highway. We study the circular mobility pattern in detail and examine the impact of the base station placement on the handoff probability. The results in this paper suggest that we may be able to estimate the handoff probabilities from a knowledge of the cell terrain, the mobile trajectory, and the vehicular movements in a cellular network, and this may serve as a useful guide for cellular network engineering.