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Saint-Petersburg State University of Telecommunications
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tarix | 01.08.2018 | ölçüsü | 1,36 Mb. | | #59888 |
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Analysis of IP-oriented Multiservice Networks Characteristics with Consideration of Traffic’s Self-Similarity Properties
NGN – next generation network Supports different types of traffic Built on the base of the universal technology Divides switching, signaling and management Provides mentioned QoS (quality of service)
NGN architecture
Three definitions 1.Exactly second-order self-similar (es-s) with the parameter H=1 ( / 2), 0< <1 If rm(k) = r(k), k Z+, m {2,3,…} 2.Second-order asymptotical self-similar (as-s) with the parameter H=1 ( / 2), 0< <1 If 3.Strictly self-similar (ss-s) with the parameter H=1 ( / 2), 0< <1 If m1-H X(m) = X, mN
X – random value F(x)=P(X It determines probability of random value X f(x)=dF(x)/dx – probability destiny f(x)≥0 M[x] – mathematical expectation D[x] – dispersion, σ – root-mean-square deviation - quadratic coefficient of variation
Weibull distribution
Log-normal distribution
Further researches Now – about 10000 works about self-similarity
Insertion of limitation for real values of random quantities
Multiservice traffic modeling
ns2
Conclusions
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