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An optimal value of multi-threshold in the bandwidth reservation scheme of integrated services over wireless networks

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3 Author(s)
Saafan, A. ; Network Planning Dept., Nat. Telecommun. Inst., Cairo, Egypt ; Elbadawy, H. ; Elramly, S.

Provisioning of guaranteed Quality of Service (QoS) in next generation cellular networks has become a great challenge specially, when the wireless access networks have been used to deliver the multimedia services. Call Admission Control (CAC) is one of the most important components of Radio Resource Management (RRM) that affects the provided bandwidth utilization efficiency and QoS guarantees. In this paper, a multi-threshold bandwidth reservation scheme is proposed to provide an acceptable solution for the trade-off between new call blocking and handoff call dropping probabilities. The major objective of this paper is to find the optimal values of the bandwidth thresholds'. In addition, the total cost function and loss probabilities were adopted to fulfill the requirements of bandwidth management in wireless environments. The proposed scheme is modelled by deploying a two-dimensional Markov process to evaluate the system performance. Throughout this work, a detailed numerical investigation for the optimal thresholds is conducted.

Published in:

Radio Science Conference (NRSC), 2011 28th National

Date of Conference:

26-28 April 2011