3-tier Service Level Agreement with Automatic Class Upgrades

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dc.contributor.advisor Yannis Viniotis, Committee Chair en_US
dc.contributor.author Haddad, Reda Nassif en_US
dc.date.accessioned 2010-04-02T18:50:53Z
dc.date.available 2010-04-02T18:50:53Z
dc.date.issued 2006-04-12 en_US
dc.identifier.other etd-03252006-115036 en_US
dc.identifier.uri http://www.lib.ncsu.edu/resolver/1840.16/4289
dc.description.abstract Tremendous efforts have been spent on devising mechanisms that would provide Quality of Service (QoS) needed by various applications, and network operators have spent a lot of resources trying to fit their networks with differentiated services capabilities. One of the Service Level Agreements (SLA) promising to sell these QoS services is the "triple play" SLA, bundling 3 classes of services targeting voice, data and video. In particular, circuit switched network operators envision the triple play SLA as essential to revenue maintenance, customer retention, and growth. It is their way, through the IP Multimedia Subsystem (IMS) standardization for example, to move all non-IP current and future services, such as voice, onto IP. In this thesis, we propose a "3-tier SLA with automatic class upgrades", an enhancement to the triple play SLA, in that it automatically upgrades lower classes' packets to fill gaps or unused bandwidth in the upper classes. The proposed SLA incorporates a scalable solution to the reordering problem, caused by upgrading lower class-packets to upper classes; the solution does not require per flow state information. We provide a thorough analysis of the QoS performance in terms of goodput, losses and delay of both UDP and TCP sources and show that the proposed SLA maximizes the customer's utilization of the reserved and paid-for bandwidth by maximizing the utilization of the most expensive, better service, upper QoS classes, and provides much greater throughput than the proposed "triple play" model. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject sla triple play diffserv upgrade qos en_US
dc.title 3-tier Service Level Agreement with Automatic Class Upgrades en_US
dc.degree.name PhD en_US
dc.degree.level dissertation en_US
dc.degree.discipline Computer Engineering en_US

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