Handling of user mobility in a CDMA cellular network
Francesco Delli Priscoli, F. Sestini · 2002
In this paper an expression of the link availability in CDMA cellular networks which takes into account user mobility is determined. The performed simulations are based on this expression and on a simple but meaningful mobility which also considers hot cells where mobile users tend to accumulate. Two mechanisms for limiting the negative effects yielded by the bursty user mobility are presented. Such mechanisms aim at preventing the accumulation of a large amount of mobile users in a given cell, thus limiting the occurrence of situations in which the self-noise is so high that the target quality requirements are not met (i.e. the link is unavailable). The consequent increase in link availability takes place at the expense of the rising of non-null blocking and dropping probabilities. In this view, an optimization process is presented which achieves the maximum capacity while satisfying the given performance targets.