Određivanje kapaciteta veza u višeuslužnim mrežama s gubicima

scientific master's theses

• Title (english): Link Capacity Sizing in Multiservice Loss Networks
• Author: Zdenko Vrdoljak
• Mentor: Mladen Kos (mentor)
• Committee member: Vjekoslav Sinković (predsjednik povjerenstva)
• Committee member: Mladen Kos (član povjerenstva)
• Committee member: Zoran Vondraček (član povjerenstva)
• Committee member: Alen Bažant (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Telecommunications); Zagreb
• Defense date and country: 2003-02-28, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Telecommunications and Informatics
• Universal decimal classification (UDC): 621.3 - Electrical engineering ; 654 - Telecommunication and telecontrol

Abstract

U ovom radu se razmatra problem dimenzioniranja kapaciteta u višeuslužnim mrežama s gubicima. Provedena je detalja analiza o primjenljivosti modela mreže s gubicima na paketske mreže s garancijom kvalitete usluge. Mreža s gubicima je matematički modelirana višedimenzionalnim Markovljevim lancem i pronađeni su izrazi za stacionarne vjerojatnosti stanja. Na temelju pronaðene razdiobe izračunate su vjerojatnosti blokiranja poziva u mreži i analizirane su neke poznate aproksimacije vjerojatnosti blokiranja. Temeljem tih aproksimacija predložen je i analiziran heuristički algoritam za dimenzioniranje kapaciteta. Na kraju rada je predložena metoda procjene kapaciteta koja se temelji na simulaciji mreže s gubicima. Uočeno je da metoda ne daje zadovoljavajuće rezultate i predloženi su smjerovi za unapređenje ove metode.

Abstract (english)

This work deals with capacity planning of multiservice loss networks. A detailed analysis is conducted on possibility of describing guaranteed services packet network with the loss network model. Loss network is mathematically modelled by multidimensional Markov chain and stationary state distribution is found. Based on the distribution, expressions for blocking probabilities are found and some known approximations are analyzed. Based on the approximations, a heuristic algorithm for capacity sizing is proposed and analyzed. In the end, a simulation-based capacity planning method is proposed and analyzed. Due to unsatisfactory results, directions for improvement of the method are recognized.

• Keywords: Mreža s gubicima; planiranje kapaciteta; Markovljevi lanci; diskretna vremenska simulacija
• Keywords (english): Loss network; capacity sizing; Markov chains; discrete-time simulation
• Language: croatian
• URN:NBN: urn:nbn:hr:168:256921
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-05-03 09:14:19