Call admission control and resource allocation of wireless networks

被引：0
作者：
机构：
[1] Department of Mathematics, IIT Roorkee, Roorkee, Uttarakhand
[2] Department of Mathematics, Institute of Basic Sciences, Khandari, Agra, Uttar Pradesh
[3] Department of Mathematics, St. John's College, Agra, Uttar Pradesh
来源：
Mittal, Ragini | 1600年 / Inderscience Enterprises Ltd., 29, route de Pre-Bois, Case Postale 856, CH-1215 Geneva 15, CH-1215, Switzerland卷 / 07期
关键词：
Bandwidth utilisation; Call admission; Call blocking; Orthogonal frequency division multiplexing; Sub-rating; Subcarrier allocation;
D O I：
10.1504/IJWMC.2014.065604
中图分类号：
学科分类号：
摘要：
In the next-generation wireless communication, Orthogonal Frequency Division Multiplexing (OFDM) is a potential key technology. A CAC scheme is proposed for subcarrier allocation in OFDM-based wireless multi-service network. Call connection requests are divided into two classes: (i) narrowband calls and (ii) wideband calls. Traffic is characterised as batch arrival process for both classes of the calls, so that each call may request multiple subcarriers to satisfy its Quality of Service (QoS) requirement. There is a provision of buffer for narrowband calls, whereas the sub-rating scheme is used for wideband calls. The successive over-relaxation method is employed to solve the set of steady-state equations governing the traffic model. Various performance measures such as blocking probability of wide and narrowband calls, overall blocking probability of the calls and bandwidth utilisation are established. The sensitivity analysis has also been carried out to depict the effects of various system parameters on the performance measures. Copyright © 2014 Inderscience Enterprises Ltd.
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页码：577 / 590
页数：13
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