Call admission control and resource allocation of wireless networks Online publication date: Thu, 30-Oct-2014
by Madhu Jain; G.C. Sharma; Ragini Mittal
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 7, No. 6, 2014
Abstract: 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.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Wireless and Mobile Computing (IJWMC):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook