GSMR网络中软交换的研究与应用

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1、北京交通大学硕士学位论文GSM-R网络中软交换的研究与应用姓名：杨珂申请学位级别：硕士专业：通信与信息系统指导教师：钟章队20080601北京交通大学硕士学位论文ABSTRA(了ABSTRACTABSTRACT：Withthelarge-scaleconstructionandhi曲一speeddevelopmentofrailwayinourcountry,GSM·RisincreasinglywidelyusedaSthespecialcommunicationtechnologyforrailway．111edemandforreliabili

2、tyandapplicationhaspromotedthecontinuousdevelopmentofGSM-R．Softswitchisallimportanttechnologyofthesolutionofnextgenerationcommunicationnetwork．TheapplicationofsoftswitchintherailwaycommunicationfieldwillbeasignificantevolutionforthecorenetworkofGSM—R．Becauseofthedefectsofexisti

3、ngnetwork，thespecialtechnologicalsuperioritiesofsoftswitchandthetrendofevolvingtothethirdgenerationcommunicationsystem．thereisnecessitytoresearchonhowtointroducesoftswitchintoGSM-R．Introducingsoftswitchintocorenetworkconstructiontosatisfytheneedofhigh-speedrailwayandpassengerde

4、dicatedlineshasasignificantmeaning．First，thisthesismakesasummarizationofsoftswitchtechnology,includingthebasicconceptionandtheactualityinChinaandabroad，detailedlydescribesthenetworksystem，includingthenetworkstructureandnetworklayers．Researchesontheservicesofsoftswitchalecombine

5、dwiththerailwaycommunicationservicesinexistence．Second，basedonthecharacteristicsofrailwaycommunication，itresearches011howtointroducesoftswitchtechnology,analyzesthecasesofbearernetworkprobablyusedinthecorenetworkconstructionandmakesadecision．Itbringsupapropersolutionforbearerne

6、tworkconstruction．IntegratedwiththeGSM—RnetworkconstructionprogrammeofMinistryofRaliway,consideringthestatusofexistingnetwork，trendoftechnologyevolutionandprotectingtheexistinginvestments，thisthesisbringsforwardthetheoryofconductingconstructionswithmultiplestepsandgivessomeadvi

7、ces．Finally,itresearchesontheredundancy,backupandQoSissues．Takingtheredundancyandbackupofnetworknodesintoaccount，itofferstheredundancyandbackupsolution．AnalyzingtheelementsinfluencingtheQoSinsoftswitch，thisthesisbringsupthedispositionstrategy．KEYWORDS：GSM—R：softswitch；redundanc

8、yandbackupCLASSN0：TN929．5学位论文版权使用授权书本学位论文作者完全了解北京交通大学有