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A Bandwidth Efficient Adaptive Call Admission Control Scheme for QoS Provisioning in IEEE 802.16e Mobile Networks

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Abstract

In wireless environment the bandwidth resource is limited and therefore judicious use of the available resources is needed. A bandwidth efficient Call Admission Control (CAC) is proposed in this paper for quality of service (QoS) provisioning for the services defined in IEEE 802.16e mobile WiMAX standards to satisfy both bandwidth and delay guarantees to the admitted connections. The concept of adaptive bandwidth degradation is introduced to improve the bandwidth utilization (BU) of the system. The proposed CAC scheme is analyzed by Markov Chain model and performance evaluation is made in comparison with fixed step size degradation. Results show that the proposed adaptive CAC scheme has excellent BU under stressed network condition. Also the long term average revenue is calculated for different service flows and for the overall system to see the efficiency of the adaptive CAC scheme.

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Acknowledgments

The authors deeply acknowledge the support from DST, Govt. of India for this work in the form of FIST 2007 Project on “Broadband Wireless Communications” in the Department of ETCE, Jadavpur University.

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  1. ETCE Department, Jadavpur University, Kolkata, India

    Romesh Laishram & Iti Saha Misra

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  1. Romesh Laishram
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  2. Iti Saha Misra
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Correspondence to Iti Saha Misra.

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Laishram, R., Saha Misra, I. A Bandwidth Efficient Adaptive Call Admission Control Scheme for QoS Provisioning in IEEE 802.16e Mobile Networks. Int J Wireless Inf Networks 18, 108–116 (2011). https://doi.org/10.1007/s10776-011-0135-3

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  • DOI: https://doi.org/10.1007/s10776-011-0135-3

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