Policing Mechanism in ATM Networks Using Fuzzy Set Theory
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概要
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ATM technique has been standardized and widely accepted as a basis for transporting and switching user's traffic in the future B-ISDN, where user's information is packetized and carried in fixed length cells. The use of statistical multiplexing, results in a need for a policing mechanism to control the attributes of each virtual connection in order to guarantee the required quality of service (QoS). The proposed parameters for monitoring source traffic characteristics are the mean cell rate, the peak cell rate or the peak burst duration. Policing of the peak cell rate is generally not complex and can be achieved by using a cell spacer of other policing mechnisms (PMs). The control of the mean cell rate is more difficult, but is intended to improve the link utilization when it has to handle butsty traffic sources. So far, some PMs have been proposed in literature such as the Leaky Bucket, the Moving Window, the Jumping Window and the Exponentially Weighted Moving Average, but these PMs can't efficiently monitor the mean cell rate of bursty sources. In this paper, a new PM called "fuzzy policing mechanism (FPM)" based on fuzzy set theory is proposed. We discuss two cases of the FPM design, when the peak cell rate is controlled and is not controlled separately by another PM. The performancr evaluation via simulations showd that the FPM has a good dynamic behavior, the selectivity of the FPM is very close to the ideal characteristic required for a PM. A comparison with the Leaky Bucket shows that the FPM has better selectivity and responsiveness characteristics.
- 一般社団法人情報処理学会の論文
- 1997-06-15
著者
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Barolli Leonard
Faculty Of Engineering Saitama Institute Of Technology(sit)
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Tanno K
Faculty Of Engineering Yamagata University
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Barolli Leonard
Faculty Of Engineering Yamagata University
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TANNO KUNINOBU
Faculty of Engineering, Yamagata University
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Tanno Kuninobu
Faculty Of Engineering Yamagata University
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