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dc.contributorMulti-disciplinary Studiesen_US
dc.creatorCheung, James On-kin-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/1682-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleSimulation study of leaky bucket algorithms for congestion control of multimedia traffic in B-ISDNen_US
dcterms.abstractIn future, multimedia information will be transported on B-ISDN network. This dissertation is to analyse the performance of the leaky bucket algorithms in the congestion control of B-ISDN under multimedia applications. In this thesis, several types of traffic source were selected as input data for the simulation of multimedia environment. For each selected model of these traffic sources, a simulation program was designed to generate the data rate of frame sequences of each traffic source. In addition to the simulated traffic source data, a real traffic source, bit rate sequence of a film "Starwars" coded in MPEG format, was also included as input traffic source the ATM network. Various types of leaky bucket mechanism were analysed by means of simulation. As fact that the simulation program worked as a virtual test bed to evaluate performance of leaky bucket algorithms for congestion control of B-ISDN. The analyses focused on the cell loss, cell delay, and throughput of ATM link in the leaky bucket under different traffic mix. From the simulation results, it confirmed that leaky bucket can be used to perform flow control function for multimedia applications in the B-ISDN/ATM network. To improve the efficiency of leaky bucket mechanism, a modified double leaky bucket is proposed. This modification improves the flexibility of leaky bucket to control the traffic flow under different traffic loading. As well as, a parameter is also proposed to indicate the priority of tagged cells for loss-sensitive source. Statistical multiplexer should transmit those cells generated from loss-sensitive source with higher priority. It can maintain the degree of cell loss of loss-sensitive source under bursty condition or heavy loading condition.en_US
dcterms.extent68, [19] leaves : ill. ; 30 cmen_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued1997en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Sc.en_US
dcterms.LCSHIntegrated services digital networksen_US
dcterms.LCSHMultimedia systemsen_US
dcterms.LCSHHong Kong Polytechnic University -- Dissertationsen_US
dcterms.accessRightsrestricted accessen_US

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