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ID:36345241
大小:3.75 MB
页数:101页
时间:2019-05-09
《IP通信网流量工程关键技术研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、密趣编号掌镪妻r镰j蓬毪鬻博士学位论文IP通信网流量工程关键技术研究学Ⅱm请^邹囤萍导"世$盛职称专业g“麇正琨教授通信与信息系统oot4十JI二十^H南京邮电大学博士学位论文ABSTRACTMulti-serviceIPcommunicationnetworkistheinevitableevolutiondirectionofNextGenerationNetworks(NON),inwhichTrafficEngineeringfiE)technologyhasbeenpaidcloseattentionbytheindustry.Itfo
2、cusesonthenetworkplanninganddesigntoreachbalancednetworkload,thequalityofservice(QoS)ensuranceandhigllnetworkresourceutilization.nekeytechnologiesoftrafficengineeringinMPLS(MultiProtocolLabelSwitching)networksarethemainresearchtopicofthethesis.Followingtheperformanceanalysisa
3、ndcomparisionofexistingoptimizationmethodsforthenetworkbandwidthallocationinsingle—serviceMPLSnetworks,twomethodsformulti-servicesMPLSnetworksaleproposedusingbandwidthconstrantmodelandcoveringsuchmulti··servicesQoSrequirementsasend-to··enddelayandpacketlossprobability.Oneissu
4、itableforcentralizednetworkresourceallocationbasedonMPLSandDiffScrvmodelandtheotheriSfordistributednetworkresourceallocationbasedonDiffServ-awareMPLStechnology.ThenahosemodelisintroducedtothebandwidthallocationofVPNnetworks.ToovercometheshortcomingsofoptimalVPNtreebandwidthal
5、locationalgorithm,twonewbandwidthallocationmethodsareproposed.OnesimplyuseslinearprogrammingalgorithmtoallocatebandwidthofVPNnetworksandtheotherischaracterizedbyitsflexiblyselectableobjectivefunction.Finally,consideringthefactthattheexistingquasi-staticroutingmethodssufferfro
6、msuchlimitationsaslowcalladmissionrate,lowresourceutilizationrate,anddifficultytodynamicallybalancetheload,anewroutingmethodisproposed,whichintegratestheideasofbothstaticresourceconfigurationanddynamicrouteselection.Alltheaboveproposedmodelsandalgorithmshavebeenverifiedthroug
7、hdetailedsimulation.Thesimulationresultshaveshownthattheperformanceofproposedmodelsandalgorithmsaresuperiortothoseofexistingmethods,andtherequirementsofTEcanbefullymet.ItisbelievedthattheresearchresultswillbeusefulfortheplanninganddesignofIPcommunicationnetworks.Keywords:Mult
8、iProtocolLabelSwitching(MPLS),traf矗cengineering,mqualityofservice(Qo
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