含優(yōu)先級(jí)機(jī)制的ATM Mux中的信元丟失率分析
THE ANALYSIS OF CELL LOSS RATES IN AN ATM MUX WITH LOSS PRIORITIES
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摘要: 含丟失優(yōu)先級(jí)機(jī)制的ATM Mux中的信元丟失率分析是ATM網(wǎng)絡(luò)流量控制研究中的一個(gè)重要問題.本文用兩狀態(tài)的MMDP近似實(shí)際輸入過程,并采用流體流技術(shù)對(duì)不同優(yōu)先級(jí)信元在ATM Mux中的丟失率進(jìn)行了分析,得到了各類信元的丟失率與緩沖容量之間關(guān)系的解析式.模擬文驗(yàn)表明該方法足夠精確,完全可以滿足實(shí)際應(yīng)用的需要.
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關(guān)鍵詞:
- 丟失優(yōu)先級(jí)機(jī)制; 信元丟失率; 異步轉(zhuǎn)移模式
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. -
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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