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| Utility-Ratio Based Adaptive Admission Control Algorithm with Probability in IEEE 802.16 Network |
| Wang Xing-jian; Hu Ai-qun; Huang Yu-hua |
| Research Center of Information Security, Southeast University, Nanjing 210096, China |
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Abstract Admission Control (AC) plays a significant role in providing the desired Quality of Service (QoS) in Broadband Wireless Access (BWA). In this paper, a unitive Utility-ratio based adaptive Admission Control algorithm (UAC) with probability and the Enhanced algorithm EUAC which simplify the computation complexity are presented for miscellaneous QoS definition in IEEE802.16 network, followed by their performance analysis. The simulation results demonstrate the adaptive algorithms can adaptively shift admission strategy base on current resources and system load, obviously and reasonably classify service flows by their utility-ratio. The simulation also illustrate adaptive algorithms have notable advantages in both throughput and utility. Furthermore, the algorithms rationally restrict the flows with lower utility-ratio to avoid degrading admitted flows with higher utility-ratio while holding high resource utilization.
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Received: 15 July 2005
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2007, Vol. 29 
