The growth of PCS systems demands better resource management algorithms. Re
duction of the cell size has been a common point that many solutions propos
e. As a result of cell reduction, the importance of finer mobility descript
ions increases, such that it is necessary to look for improved analytical t
ools to model mobility. In this paper, a mobility model based on Fractional
Brownian Motion (FBM) is presented. The proposed model represents a wide v
ariety or mobility scenarios, removing the unrealistic constraints of previ
ous models. The suitability and flexibility of the proposed methodology is
discussed through the analysis of different scenarios.