Call admission control jointly with resource reservation in cellular wireless networks

Authors:
Aytül Bozkurt;Rafet Akdeniz;Erdem Uçar
Affiliations:
Department of Electronics Technology, Namık Kemal University, Tekirdağ, Turkey;Department of Electronics and Telecommunication Engineering, Namık Kemal University, Tekirdağ, Turkey;Department of Computer Engineering, Trakya University, Edirne, Turkey
Venue:
EURASIP Journal on Wireless Communications and Networking
Year:
2010

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Abstract

To efficiently utilize the total resources and to serve mobile users demanding for different types of service, system resource utilization of these services should be considered, and efficient resource management techniques should be developed. In this paper, we propose a new call admission control (CAC) scheme jointly with resource management by considering the two service types: prioritized calls and nonprioritized calls. Proposed scheme limits the new and handoff prioritized and non-prioritized call arrivals according to call-level quality of service (QoS) requirements. By searching algorithm, admission parameters are obtained optimally and required QoS are guaranteed. Due to high priority of the prioritized calls, the admittance of non-prioritized calls into channel is restricted, while prioritized calls are admitted as long as there is sufficient bandwidth. To evaluate the performance of the proposed CAC scheme, we have compared the numerical results from the analytical model with those of New Call Bounding scheme. It is shown that the proposed CAC scheme uses the resources effectively and improves all the upper-bound QoS requirements with respect to the New Call Bounding scheme for prioritized and non-prioritized users.