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| GoS-Based Call Admission Control Algorithm for Power Controlled WCDMA Networks |
| Liu Jia-bin①②; Zhu Shi-hua①; Li Wen-yuan① |
| ①School of Electronics and Information Engineering, Xi’an Jiaotong University,Xi’an 710049, China;②Department of Automation, Beijing Institute of Petrochemical Technology, Beijing 102617, China |
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Abstract The proposed Grade of Service based Call Admission Control (GoS-CAC) algorithm operates a threshold comparison, which integrates many factors that affect the decision accuracy of a CAC scheme such as system traffic loads, Quality of Service (QoS) requirements, channel quality, interference level, system GoS and user handoff, etc. The GoS-CAC algorithm cooperates subtly with a power/data rate adjustment scheme making able fast, accurate, adaptive threshold, simple and feasible decision-making about incoming calls. Simulation results show that the proposed algorithm outperforms traditional CAC schemes about 10%, 50% and above 57% in terms of handoff service blocking probability, system GoS and overall system dropping probability, respectively.
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Received: 26 May 2004
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2005, Vol. 27 
