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Performance of a priority-based dynamic capacity allocation scheme for wireless ATM systems
Ganesh Babu, T.V.J.; Le-Ngoc, T.; Hayes, J.F.;
Selected Areas in Communications, IEEE Journal on
Volume 19,
Issue 2,
Feb 2001
Page(s):355
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369
Abstract:
The performance of a priority-based dynamic capacity allocation suitable for wireless ATM systems is presented. The scheduling of ATM cell transmission in each uplink TDMA frame is based on a priority scheme with priority given to real-time traffic over nonreal-time traffic. Real-time traffic exceeding the uplink capacity is lost while nonreal-time traffic that cannot be served is stored in a first-in first-out (FIFO) queue. An analytical model is developed to evaluate the cell loss ratio (CLR) of both real-time and nonreal-time traffic. Aggregate voice, video, and data traffic is modeled by three two-state Markov-modulated Poisson processes (MMPPs). Analytical results for different system capacities and various traffic loads and scenarios are discussed. Simulation results with on-off sources and approximating MMPP sources are also presented
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