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1、AbstractThispaperdescribesthesoftwaredesignprocessofalarmsystembasedontheSiemensTC35imoduletypeGAMmobilephoneandSMSgate.ThepapergivesthedevelopmentofmodernmobilecommunicationtechnologyandGSM,aswellastheapplicationofGSMandtheTC35imodulejistslicethesoftwareofthemachineandTC35iconnectandcontrolprincip
2、leKeywords:GSM;TC35imodule;PDU1SummarizeAlongwiththetimeprogress,thetechnicalinnovation,people'sliferequestsenhancement,themobilecommunicationtechnologyrenewalspeedisquiteastonishing,almosteveryothertenyearmobilecommunicationtechnologyhasatransformationupdate,fromthe1980s"themobilephone^topresents3
3、Ghandset,duringhashadtwomobilecommunicationtechnologytransformation,transitsfrom1GAMPSto2GGSM,fromGSMtoIMT-2000(i.e.3Gtechnology).TheGSMsystemisbasedonacellularcommunicationsprinciplewhichwasfirstproposedasaconceptinthe1940sbyBellSystemengineersintheUS.GSMnetworktoimproveafteryearsofdevelopment,isn
4、owverymature,lessblindspots,signalstability,automaticroaming,andthecommunicationdistancefromtheimpactofthesurroundingenvironment.2ModernmobilecommunicationtechnologyInnowhighlytheinformationizationsociety,theinformationandthecorrespondencehavebecomethemodernsociety"thelife:Theinformationexchangemai
5、nlyreliesonthecomputercorrespondence,butcorrespondstakesthetransmissionmethod,withthesensingtechnology,thecomputertechnologyfusesmutually,hasbecomeinthe21stcenturytheinternationalsocietyandtheworldeconomicdevelopmentpowerfulengine.Inordertoofadaptthetimerequest,thenewgenerationofmobilecommunication
6、technologyseasonableandlives,thenewgenerationofmobilecommunicationtechnologyisthepeoplesaidthatthirdgeneration^corecharacteristicisthewidebandaddressingturnsonnon-gaproamingbetweentherigidnetworkandnumerousdifferentcommunicationssystem's,gainsthemultimediacommunicationservices.Knowsmodernonmethemob
7、ilecommunicationtechnologytohavethefollowingseveralaspectimportanttechnology:1.1widebandmodulationandmultipleaccesstechniqueThewirelesshighspeeddatatransmissioncannotonlydependonthefrequencyspectrumconstant