多級互連網(wǎng)在多速率業(yè)務(wù)環(huán)境下的阻塞分析
AN ANALYSIS OF BLOCKING IN MULTISTAGE INTERCONNECTION NETWORKS SERVING MULTIRATE TRAFFICS
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摘要: 本文提出了一種估計多級互連網(wǎng)在多速率業(yè)務(wù)環(huán)境下的阻塞率的方法。它可用在多速率線路交換和ATM交換系統(tǒng)中。文中首先給出了分析方法,并用計算機(jī)仿真驗證了分析模型。然后對影響阻塞率的因素進(jìn)行了分析。研究表明,交換模塊的大小和業(yè)務(wù)的帶寬對阻塞率影響極大。同時與無阻塞交換相比,有阻塞交換結(jié)構(gòu)可大大降低系統(tǒng)的復(fù)雜性。Abstract: The paper proposes an estimation method of blocking in multistage interconnection networks serving multirate traffics. It can be used in multirate curcuit swithcing and ATM switching systems. In the paper, an analysis of blocking is given. The accuracy of the model is tested by simulation and some factors which influance the blocking are commpared. The study shows that the modular size and service bandwidth play an important role in the blocking behavior. Compared with non-blocking design, blocking design can reduce the complexity of harhware considerablly.
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Pipenger N. On crossbar switching networks. IEEE Tans. on Commun.,1975,COM-23(6):646-659.[2]Lee C. Analysis of switching networks. Bell system Tech. J., 1955, 34(11): 1287-1315.[3]Melen R, Turner J S. Nonblocking networks for fast packet switching, in Proc. of IEEE INFOCOM, Ottawa, Canada: 1989, 548-557.[4]Fitzpatrick G J, et al. Analysis of large-scale three-stage networks serving multirate traffic,teletraffic[5]and datatraffic in a period of change, ITC-13, Denmark: 1991, 905-910.[6]Kaufman J S. Blocking in a shared resource environment. IEEE Trans. on Commun.,1981,COM-29(10):1474-1481.[7]Sakurai Y, et al. Large-scale ATM multistage switching network with shared buffer memory switches.[8]IEEE Commun.Mag.,1991,29(1):90-96. -
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