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Performance analysis of call admission control scheme for voice/data integration on mobile communication system

The analytical results for call admission control algorithms performances are obtained under some specific assumption such as the average channel holding times for new calls and handoff calls are equal in a cell. It is observed, however, the assumptions of above may not be valid in some real systems due to users' mobility and irregular cell shape. In this paper, we propose a call admission control algorithm for voice/date integration systems. The scheme is based on guard channel scheme for voice traffic and movable boundary scheme to dynamically adjust the number of channels for voice and data traffic. It is demonstrated that the different average channel holding times for new voice calls and handoff voice calls have significant influence to the performance of voice and data traffic in the proposed scheme. The more reasonable and accurate results are obtained and can be used for analysis and design of real cellular systems.