TTCN-3内部结构图
来源：小侦探旅游网
SYSTEM_CTRL_REQSYSTEM_INDSYSTEM_CTRL_CNFTest case (TTCN-3)NAS_CTRL_REQNAS_CTRL_CNFSRB_COMMON_INDSRB_COMMON_REQDRB_COMMON_INDDRB_COMMON_REQSYSIND portSYS portNASCTRL portSRB portDRB portNAS Emulation(TTCN-3)NAsCountSecuritySRB2:NASonlySRB1:RRC onlyRRC+ NAS,NAS onlySRB0:RRConlyNASSecurity(per UE)RRC/NAScodecRRC_PDU_REQ/RRC_PDU_INDSRB portUser PlaneRRC(below RRC)Control PlaneSRB2SRB1SRB0DRBPDCPCiphering/ROHCPDCPPDCP ConfigRRC Security (per RB)RLCRLC ConfigAMTMRLCAM/UM/TMDCCHL1MacIndCtrlMAC ConfigRB-MappingDCCHCCCHDTCHLogical ChannelsLCID=2LCID=1LCID=0SystemIndicationC-RNTICcchDcchDtchConfigSpsConfigMACRachProcedureConfigBcchConfigPagingTriggerCellConfigRequestPcchConfigStaticCellInfoPhysicalLayerConfigDLPhysicalLayerConfigULPCCH CTRLBCCH CTRLRACH CTRLCCCH/DCCH/DTCH CTRLReferencePowerL1_TestModePdcchOrderEnquireTimingCellAttenuationPHYPBCH/PCFICH/PHICH/PDCCH/PDSCHPRACH/PUCCH/PUSCHSystemIndication