Abstract
The paper presents an analysis in a DiffServ network scenario of the achievable Quality of Service performance when different aggregation strategies between video and voice real time services are considered. Each network node of the analyzed DiffServ scenario is represented by a WF2Q+ scheduler. The parameters setting of the WF2Q+ scheduler is also discussed. In particular, the necessary network resources, estimated by the WF2Q+ parameters setting obtained considering the aggregation of traffic sources belonging to the same service class, are compared with those estimated on a per flow basis. The higher gain achievable using the first approach with respect to the second one, is also qualitatively highlighted. The simulation results evidence the possible problems that can be raised when voice traffic is merged with video service traffic. As a consequence, the paper results suggest to consider in different service class queues the two kinds of traffic.
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References
K. Dolzer, W. Payer, M. Eberspacher “A Simulation study on Traffic Aggregation in Multi-Service Networks”, Conference on High Performance Switching & Routing (joint IEEE ATM Workshop 2000), Heidelberg, Germany, 26-29 June, 2000
K. Dolzer, W. Payer “On aggregation strategies for multimedia traffic” Proceeding of the first Polish-German Teletraffic Symposium, Dresden, September 2000
S. Blake, D. Blake, M. Carlson, E. Davies, Z. Wang, W. Weiss “An architecture for Differentiated Services”, Internet RFC 2475, December, 1998
H. Naser, A. Garcia, O. Aboul-Magd “Voice over Differentiated Services”, Internet Draft, Diffserv Working Group, December, 1998
S. Keshav “An Engineering Approach to Computer Networking”, Addison-Wesley, January, 1998
J. Bennet, H. Zhang “WF2Q: Worst-case Fair Weighted Fair Queueing”, Proc. Of IEEE Infocom’ 96, March, 1996
J. N. Daigle, J. D. Langford “Models for Analysis of packet Voice Communications Systems”, IEEE JSAC, Vol. 6, pp 847–855, 1986
O. Rose “Statistical properties of MPEG video traffic and their impact on traffic modeling in ATM systems”, Un.of Wuerzburg-Inst. Of Computer Science Research Report Series. Report N. 101. February 1995
R.G. Garroppo, S. Giordano, M. Pagano, G. Procissi, “On the Relevance of Correlation Dependencies in On/Off Characterization of Broadband Traffic”, Proc. of IEEE ICC 2000, New Orleans, Louisiana, USA, 18-22 June, 2000
D. Stiliadis, A. Varma, “Latency-Rate Servers: A general model for analysis of traffic scheduling algorithms”, Tech. Rep. UCSC-CRL-95-38, July 1995
A. Charny, F. Baker et al. “EF PHB Redefined” Internet Draft, http://search.ietf.org/internet-drafts/draft-charny-ef-definition-01.txt, November, 2000
R. Bruno, R.G. Garroppo, S. Giordano “Estimation of token bucket parameters of VoIP traffic”, Proc. of IEEE ATM Workshop 2000, Heidelberg, Germany, 26-29 June, 2000
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© 2001 Springer-Verlag Berlin Heidelberg
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Garroppo, R.G., Giordano, S., Niccolini, S., Russo, F. (2001). DiffServ Aggregation Strategies of Real Time Services in a W F2Q+ Schedulers Network. In: Palazzo, S. (eds) Evolutionary Trends of the Internet. IWDC 2001. Lecture Notes in Computer Science, vol 2170. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45400-4_31
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DOI: https://doi.org/10.1007/3-540-45400-4_31
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