Model for Call Acceptance Based on Handoff Guarantees for Two Classes of Users

Providing desired quality of service (QoS) in cellular wireless networks is a challenging problem which is further magnified when considering more than one class of calls. In this paper, a novel adaptive call admission control (CAC) scheme is prposed for two classes of calls for a cellular wireless network consisting of two cells. The proposed scheme accepts a new call if it can guarantee, with a certain probability, that a user's call will be maintained irrespective of its (his/her) movement in the system. The adaptive scheme for two-cell wireless network is then extended for multiple-cell network. The adaptive scheme is found to outperform the nonpriority and dual threshold based reservation (DTR) schemes in controlling the handoff failure and new call blocking probabilities in a cellular wireless network.