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A study of teletraffic problems in multicast networks

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Karvo, Jouni
dc.date.accessioned 2012-02-10T09:36:57Z
dc.date.available 2012-02-10T09:36:57Z
dc.date.issued 2002-11-29
dc.identifier.isbn 951-22-6122-7
dc.identifier.issn 1458-0322
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2227
dc.description.abstract This dissertation studies teletraffic engineering of dynamic multicast connections. The traditional models in teletraffic engineering do not handle multicast connections properly, since in a dynamic multicast tree, users may join and leave the connection freely, and thus the multicast tree evolves in time. A model called multicast loss system is used to calculate blocking probabilities in a single link and in tree-type networks. In a single link case, the problem is a generalised Engset problem, and a method for calculating call blocking probabilities for users is presented. Application of the reduced load approximation for multicast connections is studied. Blocking probabilities in a cellular system are studied by means of simulation. The analysis is mainly concentrated on tree type networks, where convolution-truncation algorithms and simulation methods for solving the blocking probabilities exactly are derived. Both single layer and hierarchically coded streams are treated. The presented algorithms reduce significantly the computational complexity of the problem, compared to direct calculation from the system state space. An approximative method is given for background traffic. The simulation method presented is an application of the Inverse Convolution Monte-Carlo method, and it gives a considerable variance reduction, and thus allows simulation with smaller sample sizes than with traditional simulation methods. Signalling load for dynamic multicast connections in a node depends on the shape of the tree as well as the location of the node in the tree. This dissertation presents a method for calculating the portion of signalling load that is caused by call establishments and tear-downs. en
dc.format.extent 72, [100]
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Report / Helsinki University of Technology, Networking Laboratory en
dc.relation.ispartofseries 6/2002 en
dc.relation.haspart Karvo, J., Virtamo, J., Aalto, S., and Martikainen, O. Blocking of dynamic multicast connections in a single link. In Proc. of International Broadband Communications Conference, Future of Telecommunications (Stuttgart, Germany, Apr. 1998), pp. 473-483. [article1.pdf] © 1998 Kluwer Academic Publishers. By permission.
dc.relation.haspart Karvo, J., Martikainen, O., Virtamo, J., and Aalto, S. Blocking of dynamic multicast connections. Telecommunication Systems 16, 3,4 (2001), 467-481. [article2.pdf] © 2001 Kluwer Academic Publishers. By permission.
dc.relation.haspart Karvo, J., and Aalto, S. Average signalling load for multicast group management. In Proc. International Teletraffic Congress ITC-16 (Edinburgh, Great Britain, June 1999), D. Smith and P. Key, Eds., pp. 509-518.
dc.relation.haspart Aalto, S., Karvo, J., and Virtamo, J. Calculating blocking probabilities in multicast loss systems. In Proc. Intl Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS 2002) (San Diego, CA, July 2002), pp. 833-842.
dc.relation.haspart Karvo, J., Aalto, S., and Virtamo, J. Blocking probabilities of two-layer statistically indistinguishable multicast streams. In Proc. International Teletraffic Congress ITC-17 (Salvador da Bahia, Brazil, Sept. 2001), J. M. de Souza, N. L. S. Fonseca, and E. A. de Souza e Silva, Eds., pp. 769-779.
dc.relation.haspart Karvo, J., Aalto, S., and Virtamo, J. Blocking probabilities of multi-layer multicast streams. In 2002 Workshop on High Performance Switching and Routing (HPSR 2002) (Kobe, Japan, May 2002), pp. 268-277. [article6.pdf] © 2002 IEICE. By permission.
dc.relation.haspart Lassila, P., Karvo, J., and Virtamo, J. Efficient importance sampling for Monte Carlo simulation of multicast networks. In Proc. INFOCOM'01 (Anchorage, Alaska, Apr. 2001), pp. 432-439. [article7.pdf] © 2001 IEEE. By permission.
dc.relation.haspart Karvo, J. Efficient simulation of blocking probabilities for multilayer multicast streams. In Proc. IFIP Networking 2002 (Pisa, Italy, May 2002), E. Gregori, M. Conti, A. T. Campbell, G. Omidyar, and M. Zukerman, Eds., vol. 2345 of Lecture Notes in Computer Science (LNCS), pp. 1020-1031. [article8.pdf] © 2002 Springer-Verlag. By permission.
dc.relation.haspart Aaltonen, J., Karvo, J., and Aalto, S. Multicasting vs. unicasting in mobile communication systems. In Proc. Workshop on Wireless Mobile Multimedia, WoWMoM 2002 (Atlanta, GA, Sept. 2002), pp. 104-108.
dc.subject.other Electrical engineering en
dc.title A study of teletraffic problems in multicast networks en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Electrical and Communications Engineering en
dc.contributor.department Sähkö- ja tietoliikennetekniikan osasto fi
dc.subject.keyword multicast en
dc.subject.keyword blocking probability en
dc.subject.keyword loss systems en
dc.subject.keyword signalling load en
dc.subject.keyword Monte-Carlo simulation en
dc.subject.keyword convolution en
dc.identifier.urn urn:nbn:fi:tkk-001975
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Networking Laboratory en
dc.contributor.lab Tietoverkkolaboratorio fi

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