Comparision of Multiple Services Call Admission Control Schemes in Cellular Mobile Networks

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Mortazavi Far, Leila | 2008

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Type of Document: M.Sc. Thesis
Language: English
Document No: 39290 (52)
University: Sharif University of Technology, International Campus, Kish Island
Department: Science and Engineering
Advisor(s): Beigy, Hamid
Abstract:
By an increase in demands for multimedia services of mobile, wireless networks shall provide Quality of Service (QoS) requirements for users moving in cells. Multimedia services such as voice, data and image own different features and every QoS are different from the other due to delay and demand for bandwidth.
This thesis presents a new model of call admission control which consists of a few key elements for protecting the network in different conditions of workload in a manner that calls blocking /dropping are kept under desired level. This model consists of two traffic classes of voice and data in order to give apriority to handoff call over new call, the parameters in this model are adjust in a manner that handoff dropping is reduced to the least probability in the target cell and the adjacent cells. Several channels are reserved for voice and data requests in each cell to guarantee quality of service requirements in the network. Limited fractional guard channel is used to have an optimized call admission control which reduces data blocking probability. At the end, the two- dimensional traffic model is stimulated and the related results are reviewed
Keywords:
Service Quality ; Cellular Network ; Call Admission Control

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