Characterization of long-range dependent traffic regulated by leaky-bucket policers and shapers

Bregni, Stefano; Giacomazzi, P.; Saddemi, G.

doi:10.1016/j.comcom.2009.11.018

Cited by 9 publications

(7 citation statements)

References 41 publications

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“…A detailed description of policer and shaper models is beyond the scope of this paper and is provided in[58].Among the many results obtained in that work, here we highlight the complex dependence of α OUT…”

mentioning

confidence: 77%

“…Content may change prior to final publication. In paper [58], a thorough simulation study on LB regulation of LRD traffic was presented, which investigated how the LRD of traffic with 1/f α PSD is altered after regulation through either policers or shapers.…”

Section: ) Characterization Of Long-range Dependence Of Regulated Trmentioning

confidence: 99%

“…Contour lines of αOUT( r/mx , b/(σxτ0) ) estimated on the traffic output by a leaky-bucket shaper fed with fGt (αIN = 0.50) (adapted from[58]). Page 30 of 32…”

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confidence: 99%

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Twenty-Five Years of Applications of the Modified Allan Variance in Telecommunications

Bregni

2016

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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The Modified Allan Variance (MAVAR) was originally defined in 1981 for measuring frequency stability in precision oscillators. Due to its outstanding accuracy in discriminating power-law noise, it attracted significant interest among telecommunications engineers since the early 1990s, when it was approved as a standard measure in international standards, redressed as Time Variance (TVAR), for specifying the time stability of network synchronization signals and of equipment clocks. A dozen years later, the usage of MAVAR was also introduced for Internet traffic analysis to estimate self-similarity and long-range dependence. Further, in this field, it demonstrated superior accuracy and sensitivity, better than most popular tools already in use. This paper surveys the last 25 years of progress in extending the field of application of the MAVAR in telecommunications. First, the rationale and principles of the MAVAR are briefly summarized. Its adaptation as TVAR for specification of timing stability is presented. The usage of MAVAR/TVAR in telecommunications standards is reviewed. Examples of measurements on real telecommunications equipment clocks are presented, providing an overview on their actual performance in terms of MAVAR. Moreover, applications of MAVAR to network traffic analysis are surveyed. The superior accuracy of MAVAR in estimating long-range dependence is emphasized by highlighting some remarkable practical examples of real network traffic analysis.

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confidence: 77%

Section: ) Characterization Of Long-range Dependence Of Regulated Trmentioning

confidence: 99%

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Twenty-Five Years of Applications of the Modified Allan Variance in Telecommunications

Bregni

2016

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…Conceitualmente, cada estação (host) está conectada à rede por uma interface que contém um balde furado, ou seja, uma fila interna finita. Este regulador de tráfego é simplesmente um sistema de enfileiramento de um único servidor com um tempo de serviço constante [6].…”

Section: A Balde Furado (Leaky Bucket -Lb)unclassified

Aplicação de Cálculo de Rede para Estimação de Parâmetros de Qualidade de Serviço em Redes OFDM/TDMA com Policiamento de Tráfego

Junior¹,

Vieira²,

Rocha³

2012

Anais De XXX Simpósio Brasileiro De Telecomunicações

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Resumo-Neste artigo, inicialmente propõe-se um algoritmo de policiamento baseado em modelagem multifractal de tráfego, avaliando o seu desempenho em comparação a outros algoritmos. Em seguida, apresenta-se uma abordagem baseada em Cálculo de Rede (Network Calculus) para estimação de parâmetros de qualidade de serviço, tais como o tamanho médio da fila (backlog) e o retardo (delay). Analisa-se esses dois parâmetros em um sistema Wimax simplificado baseado em OFDM/TDMA antes e após a aplicação de algoritmos de policiamento de rede baseados em modelagem de tráfego.

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“…In [13,14], the dimensioning of TBF parameters through the notion of a linearbounded arrival process (LBAP) is investigated for aggregated voice over Internet protocol (VoIP) and long-range dependent (LRD) traffic. In [15], the performance trade-off of traffic shaping between access control queueing and network queueing is studied based on the spectral analysis technique, while in [16], the characterization of LRD traffic regulated by leaky-bucket policers and shapers is studied using the modified Allan variance (MAVAR) for the LRD estimation and spectral analysis of the regulated traffic. As for scheduling of shaped traffic flows, the end-to-end delay bounds and the buffer space requirements of various scheduling disciplines are well summarized in [17].…”

Section: Introductionmentioning

confidence: 99%

The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks

Kim¹

2014

Computer Networks

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Recent studies on the practice of shaping subscribers' traffic by Internet service providers (ISPs) give a new insight into the actual performance of broadband access networks at a packet level. Unlike metro and backbone networks, however, access networks directly interface with end-users, so it is important to base the study and design of access networks on the behaviors of and the actual performance perceived by end-users. In this paper we study the effect of ISP traffic shaping using traffic models based on user behaviors and application/session-layer metrics providing quantifiable measures of user-perceived performance for HTTP, FTP, and streaming video traffic. To compare the user-perceived performance of shaped traffic flows with those of unshaped ones in an integrated way, we use a multivariate non-inferiority testing procedure. We first investigate the effect of the token generation rate and the token bucket size of a token bucket filter (TBF) on user-perceived performance at a subscriber level with a single subscriber. Then we investigate their effect at an access level where shaped traffic flows from multiple subscribers interact with one another in a common shared access network. The simulation results show that for a given token generation rate, a larger token bucket -i.e., up to 100 MB and 1 GB for access line rates of 100 Mbit/s and 1 Gbit/s, respectively -provides better user-perceived performance at both subscriber and access levels. It is also shown that the loose burst control resulting from the large token bucket -again up to 100 MB for access line rate of 100 Mbit/s -does not negatively affect user-perceived performance with multiple subscribers even in the presence of non-conformant subscribers; with a much larger token bucket (e.g., size of 10 GB), however, the negative * Tel.: +44 (0)

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Characterization of long-range dependent traffic regulated by leaky-bucket policers and shapers

Cited by 9 publications

References 41 publications

Twenty-Five Years of Applications of the Modified Allan Variance in Telecommunications

Twenty-Five Years of Applications of the Modified Allan Variance in Telecommunications

Aplicação de Cálculo de Rede para Estimação de Parâmetros de Qualidade de Serviço em Redes OFDM/TDMA com Policiamento de Tráfego

The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks

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