NDLI: A robust method for fitting the (/spl sigma//spl I.oarr/, /spl rho//spl I.oarr/) model to a traffic source

Content Provider	IEEE Xplore Digital Library
Author	Azimi, M. Nasiopoulos, P. Ward, R.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. & Comput. Eng., British Columbia Univ., Canada (Azimi, M.; Nasiopoulos, P.; Ward, R.)
Abstract	A communication network, which offers a deterministic QoS guarantee to VBR traffic sources, must use a traffic regulation scheme to reserve network resources for each source. The key component of a traffic regulation scheme is the traffic characterization model used to characterize the traffic of each source. The (/spl sigma//spl I.oarr/, /spl rho//spl I.oarr/)model is so far the most popular traffic model used in communication networks. In order to achieve high network utilization, parameters of the traffic model should be selected carefully, such that the model specifies the actual traffic as accurately as possible. We present a novel method for selecting the parameters of a (/spl sigma//spl I.oarr/, /spl rho//spl I.oarr/)model for a VBR traffic source. Our method strives for accuracy, implementation simplicity and execution speed as the design goals. Our approach consists of two parts: 1) constructing the empirical envelope of the source from the traffic, and 2) finding the model parameters from the empirical envelope. We present novel solutions for these two problems. Our method for constructing the empirical envelope is faster and more accurate than the presently existing methods and can be employed in real-time applications. Our method for finding the (/spl sigma//spl I.oarr/, /spl rho//spl I.oarr/)model parameters from the empirical envelope is based on the 'divide and conquer' and sequential programming optimization techniques, and finds a near optimum result. The performance and accuracy of our methods were experimentally compared to other available methods. The results showed that the overall performance, specifically the speed and the accuracy of our methods, are significantly better than the current methods found in the literature.
Sponsorship	New Jersey Inst. of Technol. Jersy Comm. on Higher Educ. sponsored by NJ I-TOWER program at NJIT IEEE North Jersy Section IEEE COMSOC North Jersey Chapter
Starting Page	228
Ending Page	232
File Size	450965
Page Count	5
File Format	PDF
ISBN	0780377249
DOI	10.1109/ITRE.2003.1270609
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Robustness Traffic control Telecommunication traffic Communication system traffic control Admission control Calculus Communication networks Equations Piecewise linear techniques Computer networks
Content Type	Text
Resource Type	Article

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