Originality: This work proposed a novel dynamical call admission strategy for Quality of Service control in wireless networks. Rigor: Theoretically analyzed the statistical property of the hand-over behaviours in wireless networks. The proposed method is simple, stable, efficient and can be easily implemented in practice. Significance: This is one of the early works in the field for Quality of Service control in wireless networks. Impact: The proposed technique has received wide attention in the field. Web of Knowledge=27, Google Scholar=49.