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Differential Access Model for User Class Based Call Admission Control Mechanism in Next Generation Wireless Networks

G. Mahesh, Dr. Gowrishankar, Dr.H.S. Ramesh Babu

Abstract


The Next Generation Wireless Networks (NGWN) are envisioned to offer abundant services to its users. Quality of Service (QoS) needs varies amongst users as per application requirements and user class. Hence both from the service provider as well as user point of view user differentiation is an important aspect in NGWN. Optimal revenue generation along with guaranteeing the agreed upon QoS to the users’ is a challenging problem for the network service providers. With more number of users in the system more revenue will be generated, but guaranteeing the agreed upon QoS becomes difficult. Call Admission Control (CAC) directly controls the number of users in the system and hence must be carefully designed. This paper proposes a differential access model for CAC mechanism in NGWN based on the users’ QoS needs. The model is based on allocating more number of channels to high priority users as compared to low priority users. The simulation results for call blocking probability of different user classes and the system are presented.

Keywords


Call Admission Control, Differential Access Model, Next Generation Wireless Networks, Quality of Service, User Class.

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References


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