Improving prioritized handover performance with handset-assisted selective admission control in overlapping coverage

With a microcell strategy, high reuse efficiency is achieved. However, microcells may give rise to a great number of handovers. Each handover requires network resources to reroute the corresponding call to a new base station, it is preferred to have as few handovers as possible to decrease the processing burden. New call attempts generated near cell boundaries usually request handovers very soon. This phenomenon may cause unnecessary handover processing burden and too much bandwidth reservation. We suggest a selective admission control scheme in order to resolve the drawback of the phenomenon. Performance analysis shows that our scheme improves handover performance without sacrificing new call blocking performance.