TETRA数字集群系统分组数据交换网关的研究与开发

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1、北京交通大学硕士学位论文TETRA数字集群系统分组数据交换网关的研究与开发姓名：赵云申请学位级别：硕士专业：通信与信息系统指导教师：孙昕20080601北京交通大学硕士学位论文ABSTRACTABSTRACT：Basedonitssafe，stableandhighlyefficientvoiceanddatatraffic，TETRAdigitaltrunkedsystemisbroadlyappliedinworldwide．Atthepresenttime，alltheTETRAdigitaltnmkedsystemequipmentsbeingused

2、inChinaareimported．rnleyarenotonlyexpensivebutalsocausehiddentroubleforthenationalsecurity．Therefore，itmakesgreatsensetodevelopTETRAdigitaltrunkedsystemwithOUrownindependentintellectualpropertyright．ThepacketdatatransfferingfunctionofTETRAdigffaltrunkedsystemiscompletedbyTETRAdigita

3、ltrunkedsystempacketdataswitchinggatewaysystem．ProvidingthecustomersofTETRAwithcurrentpacketradioaccessingservice，itplaysallimportantroleinthewholeTETRAdigitalmmkedsystem．TETRApacketdataswitchinggatewayprovidesawayofprocedureingdatatransmissioninhigh-speed．Itisadataswitchingentityba

4、sedonpacketdatatransmissionservice．Itprovidesthewirelesssubscriberswiththepacketdataservicesofphototransmission,E-mail，webbrowser，globalpositioningsystem，ere．andalsoabundantwirelesscontrolanddispatchapplication．Thereby,thedevelopmentofpacketdataswitchinggatewaysystemisthekeypointinT

5、ETRAdi．gitaltrunkedsystem．ThisarticlegivesalloverviewofTETRAdigitaltrunkedcommunicationsystem’Stechnicalfeaturesanddevelopmentconditioninthecountry．CombinedwithTETRAdigitalmmkedsystem’sdevelopmenttrendanditssoftswitchingarchitechture，thearticleanalysesthedesignandprincipiumofTETRAdi

6、gitaltnmkedsystempacketdataswitchinggatewayindetail．BasedontheintegrateddevelopmentenvironmentofTelelogicTan(32andLinux／C，itachievesthefunctionsofTETRApacketdataswitchinggatewayentitybyprogramminginlanguagesUMLandC．anditalsodevelopesPathManagementProgramofGTP,MSinitiatedPDPContextAc

7、tivationandDeactivation，NetworkinitiatedPDPContextActivationandDeactivation,ReceivingandSendingofPacketData．Inthetestsofprotocolconformaneet，theresultsareconformedtotheTETRAdigitalmmkedsystemairinterfaceprotocolstandardandGTPprotocolstandard，whichmeansitmetthedesignrequirements．This

8、papercontains52figu