,61997.11.GPSTheMobileCommunicationProtocolofTheGPSVehicleMonitorSystemHuChunyuZhuMinWangWeiranLiYinGPSGPSOSIAbstract:ThepaperintroducesthefunctionandtheusageoftheGPSVehicleMonitorSystem,anddescribesthestructureofthesysteminstandofcommunication.Itdealsdetailedlywithasetofprotocolemployedinthemobilecommunication,whichsecuresthereal-timenessandsecurityofthesystem.KeyWord:GPSsystemSpecialbig-sectionmobilecommunicationnetworkOSImodelMulti-usagebytimedisvisionTheoveralldetectingcycleReal-timenessAlarmingresponseabilityGPS(GPS)(GIS)GPS486GISRS23280C51CPUCPUGISGPSGPSGPSGPS80C51CPU1GPS/1.MSK2.2.1122.2=/22.31/1GPSOSI1ApplicationPresentationSessionTransportNetworkDataLinkPhysical1.3.13.2HDLCHighLevelDataLinkControl8=03=0168FF2.F8011111103aGPSSynchronizerSb(CommandC)cAlarmAdDataDeQueryQ7147+70CRC16G(x)=X16+X12+X5+13.33.3.1,3N21N123.N(+))3.3.24ACAD1D2SDNRSACADM(N-1)+1DNMR124.KKKD1DNMNMK43.4OSIGPSGPSGPS100M51GPS120033.63.3633.611988425