含优先级机制的ATM Mux中的信元丢失率分析
THE ANALYSIS OF CELL LOSS RATES IN AN ATM MUX WITH LOSS PRIORITIES
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摘要: 含丢失优先级机制的ATM Mux中的信元丢失率分析是ATM网络流量控制研究中的一个重要问题.本文用两状态的MMDP近似实际输入过程,并采用流体流技术对不同优先级信元在ATM Mux中的丢失率进行了分析,得到了各类信元的丢失率与缓冲容量之间关系的解析式.模拟文验表明该方法足够精确,完全可以满足实际应用的需要.Abstract: The analysis of cell loss rates in an ATM Mux with loss priorities is an important problem in the study of traffic control in ATM networks. In this paper, the loss rates of the cells with different priorities in an ATM Mux are analyzed by approximating the actual input process with two-state MMDP and fluid flow technique, and the analytical expressions of the relation between the loss rates and the buffer size are obtained. Simulation shows that our approach is sufficiently accurate for applications.
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Kroner H.et al. An efficient solution method for Markov models of ATM links with loss priorities. IEEE J. of Select. Areas Commun., 1991, SAC-9(3): 418-427.[2]Elwalid A I, Mitra D. Statistical multiplexing with loss priorities in rate-based congestion control of high-speed networks. IEEE Trans. on Commun., 1994, COM-42(11): 2989-3001.[3]Yongming Wang, Zailu Huang. A simple approach to the cell loss probability in ATM networks. in ICCT 96, Beijing: May 1996, 259-262.[4]Butto M. et al[J].Effectiveness of the leaky bucket,policing mechanism in ATM networks. IEEE J. of Select. Areas Commun.1991, SAC-9(3):335-342[5]Tao Yang. et al. A Markov modulated characterization of packetized voice and data traffic and related statistical multiplexer performance. IEEE Trans. on Commun., 1995, COM-43(1): 117-126. -
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