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This paper presents an analytical model of adaptive bandwidth allocation scheme, called complete sharing with preemptive priority (CSPP) scheme, for multi-service wireless cellular networks. It employs movable boundaries to consider distinguishing the performance between multiple services, and uses the complete sharing approach to maximize the bandwidth utilization. Besides, the CSPP scheme captures the elastic data traffic by using a degradation/compensation mechanism and considers preemptive priority (PP) mechanism for voice traffic, while the degradation of data traffic by PP mechanism is compensated through a victim buffer. The analysis and numerical results demonstrate that our scheme can guarantee different QoS requirements from different traffic classes and improve the bandwidth utilization efficiency.
Date of Conference: 22-24 Aug. 2005