GSMR网络失效性分析及其对CTCS3的影响

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1、北京交通大学硕士学位论文GSM-R网络失效性分析及其对CTCS-3的影响姓名：熊雪莱申请学位级别：硕士专业：通信与信息系统指导教师：钟章队20080601Withthedevelopmentofsociety,inordertomeettheneedsofmordenrailway’Stechnologyincorporationbetweencommunicationandsignal，GSM一刚CTCS-3hasbecomeallimportantdirectionofrailway’Sdedicatedmobilecommunicationandtraincon

2、trolsystem．Asaspecialityofdigitalmobilecommunicationdesignedforrailway,GSM·Rcouldprovidevoiceanddataserviceforrailway,andtobethetransmissionplatroofofCTCS一3atthesametime．Communicationfailurecertainlywillbringgreatinfluencestotheservicesofit’Sapplicationlayer．BasedonETCS·2andcombinedwith

3、CTCS-2，themirdclassofChineseTrainControlSystemCTCS-3ensuresthesafly,highspeedandhighefficiencyofthemovingtrain．CTCS·3takesthecontrolofmovingtrainbyusingthecommunicationbetweentheRadioBlockingCenterRBConthegroundandtheOnboardUnitOBU．TheOBUsendslocationreportstoRBCevery6s，aferthattheRBCse

4、ndsthenewmoveauthoritycalledMAandtheacknowledgementoflocationreportbacktoOBU．CommunicationsbetweenthegroundandtrainwillbeinterruptedwhentheGSM·Rnetworkfailed，thenthefollowingabnormalworkofCTCS一3andthedemotiontoCTCS·2willdelaytheoperationandinfluencethetravellingsafety．Theearlierresearch

5、esonfailuresaremostlybasedonsomecomponentsorsingleapplicationserviceofGSM—Rsystem．Butastheapplicationlayer,CTCS-3takesmoreattentiontowhetherGSM·RcouldprovidereliableservicestOit．SoitisnecessarytOanalyzethefailuresofthewholeGSM-Rsystem．Theresearchinthispaperbothrelatestothetheoriesandapp

6、licationsofcommunicationandsignal．ThispaperanalyzedthesystemstructureandtransmissionmodelofGSM—R，madethequalitativeanalysisofGSM-·RfailurepatternsandquantitativeanalysisofGSM·-RfailureprobabilityusingtheFaultTreeAnalysismethod．Moreover,thisPaperalsotookaconsiderationoftherealitiesonQing

7、hai-Tibetrailway,Datong-Qinhuangdaorailway,Wuhan-Guangzhoudedicatedpassengerrailway,anddidtheFaultTreemodeling,reliabilitymodeling,failurepattensanalysis，failureprobabilitycalculationsforeach，andsummarizedstepsofreduceingthenetwork’Sfailureprobability．Ontheotherside，thispaperto