Performance Analysis of Cell Rate Monitoring Mechanisms in ATM Systems

Ritter, Michael; Tran-Gia, Phuoc

doi:10.1007/978-0-387-34884-1_8

Cited by 9 publications

(6 citation statements)

References 16 publications

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“…The analysis is based on the algorithm for the computation of the system size distribution in the G[X] / D /1/-S queueing system presented in [15]. This algorithm has been used in [8,12,14] to investigate UPC functions such as the Generic Cell Rate Algorithm (GCRA) and an extension to analyze twodimensional state processes has been presented in [13]. As outlined in the next three subsections, performance measures such as the cell rejection probability, the cell interdeparture time distribution, and the cell delay distribution can be derived easily using the limiting distribution u-(i,j).…”

Section: Discussionmentioning

confidence: 99%

Performance Analysis of the Dual Cell Spacer in ATM Systems

Ritter

1995

High Performance Networking

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In this paper we develop an analysis of the so-called Dual Cell Spacer. In contrast to a conventional spacer, which shapes a traffic stream only according to a given Peak Cell Rate, the Dual Cell Spacer takes into account the Peak Cell Rate as well as the Sustainable Cell Rate with the corresponding Burst Tolerance. The analysis is carried out in the discrete-time domain. Performance measures such as the cell rejection probability, the cell delay distribution and the cell inter-departure time distribution are derived. All results are of an exact nature. Numerical examples that compare the performance of the Dual Cell Spacer with that of a conventional spacer show a similar performance in terms of cell delay and cell loss for relatively small values of the Burst Tolerance. Using our analysis, both the Sustainable Cell Rate and the Burst Tolerance, which are used for traffic shaping in the Dual Cell Spacer, can be chosen adequately to achieve a given target cell rejection probability or cell delay, respectively, and to allow the network provider to obtain a high multiplexing gain.

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Section: Discussionmentioning

confidence: 99%

Performance Analysis of the Dual Cell Spacer in ATM Systems

Ritter

1995

High Performance Networking

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“…Studies concerning ACR policing can be found in e.g. [19] and [3]. Therefore, the introduction of a SCR as source traffic descriptor is discussed in the standardization bodies.…”

Section: Policing Of Mpeg Video Sourcesmentioning

confidence: 99%

“…The algorithm we present here is of iterative nature and based on the discrete-time analysis of the G I[X] / D /1 -S queueing model presented in [20], which was used in [7] to analyze the GCRA with a renewal process used as input traffic. In [19], an extension of this analysis to deal with ON/OFF input traffic was presented. Based on this, we describe an algorithm to deal with the cyclic occurrence of frames of different types in MPEG coded video sequences due to the coding in GOPs.…”

Section: Cell Loss Analysismentioning

confidence: 99%

MPEG-Video Sources in ATM-Systems — A new approach for the dimensioning of policing functions

Rose

Ritter

1995

Local and Metropolitan Communication Systems

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The ATM transport concept of B-ISDN allows for an efficient and flexible use of network resources for variable bit rate services with high transmission rates. One major traffic source which will make use of this capability will be video and multimedia applications. The changes in the cell rate of such sources are caused by the compression of the digitized video frames. The MPEG (ISO Moving Picture Expert Group) coding scheme is expected to be the major compression algorithm for the first ATM video applications. Thus there is a need to find source traffic descriptors of MPEG video sources which can be used efficiently for connection admission control and usage parameter control for these sources. Besides the peak cell rate, the sustainable cell rate might be used for these purposes. Both the ITU-T and the ATM Forum propose the Generic Cell Rate Algorithm (GCRA) for policing these two cell rates. In this paper we develop a novel model for the cell stream of an MPEG video coder output and present a cell loss analysis for a GCRA monitoring its sustainable cell rate. A variety of ATM link capacities and sustainable cell rate parameters are studied to show the accuracy of the analysis and to test the appropriateness of the sustainable cell rate as traffic descriptor of MPEG video sources.

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“…Research on traffic specifications and policing took off at the advent of ATM networks [10]. In ATM networks, traffic was described in terms of dual Leaky Bucket (LB) parameters: peak and sustainable cell rate and maximum burst size.…”

Section: B Previous Workmentioning

confidence: 99%

Policing aggregates of voice traffic with the token bucket algorithm

Buchli¹,

Vleeschauwer²,

Janssen³

et al.

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333)

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Abstract-Estimating correct traffic descriptors is an important issue when deploying IP telephony with quality of service guarantees. Usually, a token bucket is used to police a traffic flow. Such a policer checks (and ensures) that the traffic flow fits inside a traffic envelope. For variable bit rate (VBR) sources normally two traffic envelopes are specified: one dealing with the peak rate and one dealing with the sustainable rate with an associated burst size. These parameters have to be specified when making a reservation with either the resource ReSerVation Protocol (RSVP) in case of IntServ or may be specified in a Service Level Specification (SLS) when using DiffServ. This paper shows how to choose the traffic descriptors for aggregate voice traffic for both constant bit rate sources and sources that use voice activity detection. Also the influence of variable packet size on the Packet Discard Ratio (PDR) is shown. A traditional policer discards large packets more frequent than smaller ones. To alleviate this, a modification to the token bucket algorithm is proposed in this paper.

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Performance Analysis of Cell Rate Monitoring Mechanisms in ATM Systems

Cited by 9 publications

References 16 publications

Performance Analysis of the Dual Cell Spacer in ATM Systems

Performance Analysis of the Dual Cell Spacer in ATM Systems

MPEG-Video Sources in ATM-Systems — A new approach for the dimensioning of policing functions

Policing aggregates of voice traffic with the token bucket algorithm

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