Abstract
In this paper, we propose a call admission control policy for cluster-based micro/picocellular wireless networks. The proposed call admission policy employs two levels of admission thresholds: one at the cluster level and the other at the cell level. The performance of the proposed policy is compared with that of the policy proposed in [5]. Our results show that, under the condition that both policies provide the same predetermined maximum level of call hand-off dropping probability, the proposed call admission policy provides significantly lower call hand-off dropping probability and significantly higher call success probability and throughput than the policy proposed in [5].