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

被引：0
|
作者：
Laishram, Romesh [1 ]
Misra, Iti [1 ]
机构：
[1] Univ Jadavpur, ETCE Dept, Kolkata, India
来源：
INTERNATIONAL JOURNAL OF WIRELESS INFORMATION NETWORKS | 2011年 / 18卷 / 02期
关键词：
IEEE; 802.16e; QoS; Markov chain; Adaptive CAC; Delay guarantees; Bandwidth utilization;
D O I：
10.1007/s10776-011-0135-3
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
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.
引用
收藏
页码：108 / 116
页数：9
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