(BIST)BS Base stationBSC Base station controllerBSN Block Sequence NumberBSS Base Station SubsystemBSSGP Base Station System GPRS ProtocolBSSMAP Base Station Subsystem Mobile Application PartBSP Board Support PackageBSR Buffer Status ReportBTS Base Transceiver StationBWP Bandwidth PartC‐RNTI Cell Radio‐Network Temporary IdentifierCBG Code block groupCBGFI CBG flush indicatorCC Call ControlCCE Control Channel ElementCCCH/DCCH Common/Dedicated Control ChannelCC/CM Call Control/Connection ManagementCM Connection ManagementCN Core NetworkCORESET Control Resource SetCRB Common Resource BlockCRC Cyclic redundancy checkCRI CSI‐RS Resource IndicatorCSI Channel State InformationCSI‐RS Channel State Information Reference SignalCS‐RNTI Configured scheduling RNTICSI‐RSRP CSI Reference Signal Received PowerCSI‐RSRQ CSI Reference Signal Received QualityCSI‐SINR CSI Signal‐to‐Noise and Interference RatioCSFB Circuit‐switched Fall‐backCP Cyclic PrefixCPS Call per secondCQI Channel Quality IndicationCS Circuit‐switchedCSN Concrete Syntax NotationDCI Downlink control informationDL‐SCH/UL‐SCH Downlink/Uplink Shared ChannelDM‐RS Demodulation reference signalsDN Data NetworkDNN Data Network NameDRBData Radio BearerDSP Digital Signal ProcessorDTAP Direct Transfer Application PartDTCH Dedicated Traffic ChanneleMBB Enhanced Mobile BroadbandEAP Extensible Authentication ProtocolECM Evolved Packet System Connection ManagementEDGE Enhanced Data for Global EvolutionEGPRS Enhanced General Packet Radio ServiceeNodeB Evolved NodeBEIR Equipment Identity RegisterEMM Evolved Packet System Mobility ManagementEN‐DC E‐UTRA NR Dual‐ConnectivityEPC Evolved Packet CoreEPS Evolved Packet SystemESM Evolved Packet System Session ManagementETSI European Telecommunications Standards InstituteE‐UTRA Evolved‐UMTS Terrestrial Radio AccessE‐UTRAN Evolved‐UMTS Terrestrial Radio Access NetworkFDD Frequency Division DuplexFR Frame RelayFR1 Frequency Range 1 (5G)FR2 Frequency Range 2 (5G)FTP File Transfer ProtocolFW FrameworkGBR Guaranteed Bit RateGERAN GPRS Edge Radio Access NetworkGGSN Gateway GPRS Support NodeGMSC Gateway Mobile Switching CentergNB/gNodeB 5G Base StationGPRS General Packet Radio ServiceGSM Global System for Mobile CommunicationGUAMI Globally Unique AMF IDGUMMEI Globally Unique MME IdentifierHARQ Hybrid Automatic Repeat RequestHLR/HSS Home Location Register/Home Subscriber ServerHS‐DSG High Speed Downlink Shared ChannelHSDPA High‐Speed Downlink Packet AccessHSPA High‐Speed Packet AccessHSUPA High‐Speed Uplink Packet AccessIAB Integrated Access and BackhaulIDNNS Intra Domain NAS Node SelectorIE Information ElementIEI Information Element IdentifierIMS IP Multimedia SubsystemIMSI International Mobile Subscriber IdentityINT‐RNTI Interruption RNTIIOT Inter‐operability TestingIP Internet ProtocolIPC Inter Process CommunicationIPH IP Header CompressionISI Inter Symbol InterferenceISR Idle State Signaling ReductionIWF Interworking FunctionK AMSE LTE Key Access Security Management EntityKPI Key Performance IdentifierL1….Ln Layer 1….nLAI Location Area IdentificationLCID Logical Channel IdentifierLDPC Low Density Parity CheckLLC Logical Link ControlLI Layer IndicatorLSB Least Significant BitLTE Long‐term EvolutionmMTC Massive Machine Type CommunicationsmIoT Massive Internet of ThingsMAC Medium Access ControlMANO Management and OrchestrationMCC Mobile Country CodeMCS Modulation and coding schemeMIB Master Information BlockMIMO Multiple‐Input Multiple‐OutputMM Mobility ManagementMME Mobility Management EntityMMEC MME CodeMMS Multimedia messaging serviceMN Master NodeMNC Mobile Network CodeMOC Mobile‐originated voice callMOCN Multi‐operator Core NetworkMS Mobile stationMSB Most Significant BitMSC Mobile Switching CenterMSC‐S MSC ServerMSIN Mobile Subscriber Identification NumberMU‐MIMO Multi‐User MIMON3IWF Non‐3GPP Inter‐working FunctionNACK Negative AcknowledgmentNAS Non‐access StratumNEF Network Exposure FunctionNF Network FunctionNFV Network Functions VirtualizationNGAP Next Generation Application ProtocolNG‐RAN Next Generation Radio Access NetworkNon‐GBR Non‐Guaranteed Bit RateNNSF NAS Node Selection FunctionNRF Network Repository FunctionNSA Non‐StandaloneNR New RadioNRF Network Repository FunctionNSSAI Network Slice Selection Assistance InformationNSSF Network Slice Selection FunctionNSAPI Network Service Access Point IdentifierNSS Network SubsystemOFDM Orthogonal Frequency Division MultiplexingOFDMA Orthogonal Frequency Division Multiplexing AccessO&M Operation and MaintenancePBCH Physical Broadcast ChannelPCH Paging ChannelPCF Policy Control FunctionPCO Protocol Configuration OptionsPCRF Policy Charging and Restriction FunctionPCU Packet Control UnitPCFICH Physical Control Format Indicator ChannelPDCCH Physical Downlink Control ChannelPDCP Packet Data Convergence ProtocolPDSCH Physical Downlink Shared ChannelPD Protocol DiscriminatorPDSCH/PUSCH Physical Downlink/Uplink Shared ChannelPDN Packet Data NetworkPDU Protocol Data UnitPDP Packet Data ProtocolPEI Permanent Equipment IdentifierPER Packet Error RatePLMN Public Land Mobile NetworkPFC Packet Flow ContextPGW Packet Data Network GatewayPHICH Physical HARQ Indication ChannelPMI Precoding‐Matrix IndicatorPOST Power‐on self‐testPRACH Physical Random‐Access ChannelPRB Physical Radio BlockP‐RNTI Paging RNTIPS Packet SwitchedPSS Primary Synchronization SignalPSTN Public Switched Telephone NetworkPTI Procedure Transaction IdentityPTRS Phase‐tracking Reference SignalPUCCH Physical Uplink Control ChannelPUSCH Physical Uplink Shared ChannelQAM Quadrature Amplitude ModulationQCI QoS Class IdentifierQFI QoS Flow IDQoS Quality of ServiceQPSK Quadrature Phase Shift KeyingRAB Radio Access BearerRAI Routing Area IdentificationRAC Routeing Area CodeRAN Radio Access NetworkRA‐RNTI Random Access RNTIRACH Random Access ChannelRAT Radio Access TechnologyRB Resource BlockRE Resource ElementRBG Resource Block GroupRF Radio FrequencyRI Rank IndicatorRAU Routing Area UpdateREG Resource Element GroupRLC Radio Link ControlRF Radio FrequencyRIV Resource Indication ValueRNA RAN‐based Notification AreaRNAU RAN‐based Notification Area UpdateRNS Radio Network SubsystemRNC Radio Network ControllerRNL Radio Network
