Terminology
- 2G
- 2nd Generation
- 3G
- 3rd Generation
- 3GPP
- 3rd Generation Partnership Project
- 4G
- 4th Generation
- 5G
- 5th Generation
- 5G NR
- 5G New Radio
- 5G RG
- 5G Residential Gateway
- 5GAA
- 5G Automotive Association
- 5GACIA
- 5G for Connected Industries and Automation
- 5GC
- 5G Core
- 5G‐GUTI
- 5G Globally Unique Temporary Identifier
- 5GIA
- 5G Infrastructure Association
- 5GPPP
- 5G Public‐Private Partnership
- 5QI
- 5G QoS Identifier
- 5G‐SIG
- 5G Special Interest Group
- 5GS
- 5G System
- 5G‐S‐TMSI
- 5G S‐Temporary Mobile Subscription Identifier
- 5GTF
- 5G Task Force
- 6G
- 6th Generation
- AAA
- Authentication, Authorization and Accounting
- AC
- Access Class
- ACC
- Adaptive Cruise Control
- ACK
- Acknowledgement
- ADSL
- Asymmetric Digital Subscriber Line
- AES
- Advanced Encryption Standard
- AF
- Application Function
- AGCH
- Access Grant Channel
- AI
- Artificial Intelligence
- AKA
- Authentication and Key Agreement
- AL
- Aggregation Level
- AM
- Acknowledged Mode
- AMF
- Access and Mobility Management Function
- AOA
- Angle of Arrival
- AOD
- Angle of Departure
- API
- Application Programming Interface
- APN
- Access Point Name
- AR
- Augmented Reality
- ARQ
- Automatic Repeat Request
- ARIB
- Association of Radio Industries and Businesses
- ARP
- Allocation and Retention Policy
- ARPC
- Average Revenue Per Customer
- ARPD
- Average Revenue Per Device
- ARPF
- Authentication Credential Repository and Processing Function
- ARPU
- Average Revenue Per User
- ARQ
- Automatic Repeat Request
- AS
- Access Stratum
- AS
- Application Server
- ASN.1
- Abstract Syntax Notation Number 1
- ATIS
- Alliance for Telecommunications Industry Solutions
- AUSF
- Authentication Server Function
- AV
- Authentication Vector
- BBF
- Broad‐Band Forum
- BCCH
- Broadcast Control Channel
- BCH
- Broadcast Channel
- BFD
- Beam Failure Detection
- BFI
- Beam Failure Instance
- BFR
- Beam Failure Recovery
- BG
- Base Graph
- BLE
- Bluetooth Low Energy
- BLER
- Block Error Rate
- BNG
- Broadband Network Gateway
- BPSK
- Binary Phase Sift Keying BS
- BS
- Base Station
- BSD
- Bucket Size Duration
- BSR
- Buffer Status Report
- BSIC
- Base Station Identity Code
- BSS
- Base Station Subsystem
- BTS
- Base Transceiver Station
- BWP
- Bandwidth Part
- CAPEX
- Capital Expenditures
- CBC
- Cell Broadcast Centre
- CBE
- Cell Broadcast Entity
- CBRA
- Contention Based Random Access
- CBS
- Cell Broadcast Service
- CC
- Coverage Class
- CCCH
- Common Control Channel
- CCE
- Control Channel Element
- CCSA
- China Communication Standards Association
- CDF
- Charging Data Function
- CDMA
- Code Division Multiple Access
- CDN
- Content Delivery Network
- CDR
- Charging Data Record
- CE
- Coverage Enhancement
- CE
- Control Elements
- CFRA
- Contention Free Random Access
- CGF
- Charging Gateway Function
- CHF
- Charging Function
- CIoT
- Cellular IoT
- C‐ITS
- Cooperative Intelligent Transportation Systems
- CK
- Cyphering Key
- CM
- Connection Management
- cmWave
- centimeter Wave frequencies
- cMTC
- critical Machine Type Communication
- CN
- Core Network
- CoMP
- Coordinated Multipoint Transmission
- CORESET
- Control Resource Set
- CP
- Control Plane
- CP
- Cyclic Prefix
- CPE
- Customer Premises Equipment
- CP‐OFDMA
- Cyclic Prefix Orthogonal Frequency‐Division Multiple Access
- CPRI
- Common Public Radio Interface
- CQI
- Channel Quality Indicator
- C‐RAN
- Centralized RAN
- CRC
- Cyclic Redundancy Check
- C‐RNTI
- Cell Radio Network Temporary Identifier
- CS
- Circuit Switched
- CSI
- Channel State Information
- CSI‐RS
- Channel State Information Reference Signal
- CSFB
- Circuit‐Switched Fallback
- CSS
- Common Search Space
- CU
- Central Unit
- CUPS
- Control/User Plane Separation
- DCCH
- Dedicated Control Channel
- DCI
- Downlink Control Information
- DECOR
- Dedicated Core Network
- DEI
- Drop Eligible Indicator
- DFT‐s‐OFDM
- Discrete Fourier Transform‐spread‐OFDM
- DHCP
- Dynamic Host Configuration Protocol
- DL
- Downlink (Network to UE)
- DMRS
- Demodulation Reference Signal
- DN
- Data Network
- DNAI
- Data Network Access Identifier
- DNN
- Data Network Name
- DoS
- Denial of Service
- DRB
- Data Radio Bearer
- DRX
- Discontinuous Reception
- DTCH
- Dedicated Traffic Channel
- DSL
- Digital Subscriber Line
- DU
- Distributed Unit
- E2E
- End‐to‐End
- EAB
- Extended Access Barring
- EAP
- Extensible Authentication Protocol
- EASE
- EGPRS Access Security Enhancements
- EC
- European Commission
- EC
- Extended Coverage
- EC‐GSM‐IoT
- Extended Coverage for GSM based Internet of Things
- eCPRI
- enhanced CPRI
- EC SI
- Extended Coverage System Information
- eDECOR
- Enhanced Dedicated Core Network
- EDGE
- Enhanced Data Rates for GSM Evolution
- eDRX
- Extended idle mode DRX
- EGPRS
- Enhanced GPRS
- EIR
- Equipment Identity Register
- EIRP
- Equivalent Isotropic Radiated Power
- eMBB
- enhanced Mobile Broadband
- EMM
- EPS Mobility Management
- EMSK
- Extended Master Session Key
- EN‐DC
- E‐UTRAN ‐ New Radio ‐ Dual‐Connectivity
- EPC
- Evolved Packet Core
- ePDG
- Enhanced Packet Data Gateway
- EPS
- Evolved Packet System
- E‐SIM
- Embedded SIM
- ESM
- EPS Session Management
- E‐SMLC
- Enhanced SMLC
- ETH
- Ethernet
- ETSI
- European Telecommunications Standards Institute
- EU
- European Union
- E‐UTRAN
- Evolved Universal Mobile Telecommunications System Terrestrial RAN
- eUTRAN
- Evolved Universal Mobile Telecommunications System Terrestrial RAN
- FAR
- Forwarding Action Rule
- FAR
- False Alarm Rate
- FCC
- Federal Communications Commission
- FCCH
- Frequency Correction Channel
- FDD
- Frequency Division Duplex
- FFT
- Fast Fourier Transform
- FH
- Frequency Hopping
- FMC
- Fixed Mobile Convergence
- FN
- Frame Number
- F‐OFDM
- Filtered OFDM
- FQDN
- Fully Qualified Domain Name
- FR
- Frequency Range
- FUA
- Fixed Uplink Allocation
- FWA
- Fixed Wireless Access
- GBR
- Guaranteed Bitrate
- GERAN
- GSM / EDGE RAN
- GFBR
- Guaranteed Flow Bitrate
- GGSN
- Gateway GPRS Support Node
- GMLC
- Gateway Mobile Location Centre
- gNB
- Gigabit NodeB, Next Generation NodeB
- GPRS
- General Packet Radio Service
- GPSI
- Generic Public Subscription Identifier
- GSM
- Global System for Mobile communications
- GSMA
- GSM Association
- GTP
- GPRS Tunneling Protocol
- GUAMI
- Globally Unique AMF Identifier
- GUTI
- Globally unique temporary UE identity
- HARQ
- Hybrid Automatic Repeat Request
- HBRT
- Hardware‐Based Root of Trust
- HD
- High Definition
- HLcom
- High Latency Communication
- HLR
- Home Location Register
- HLS
- High‐Layer Split
- HPLMN
- Home PLMN
- HR
- Home Routed
- HSDPA
- High Speed Downlink Packet Access
- HSPA
- High Speed Packet Access
- HSS
- Home Subscriber Server
- HSUPA
- High Speed Uplink Packet Access
- HTTP
- Hypertext Transfer Protocol
- HW
- Hardware
- I 4.0
- Industry 4.0
- IaaS
- Infrastructure as a Service
- ICT
- Information and Communication Technology
- ID
- Identity
- IETF
- Internet Engineering Task Force
- IK
- Integrity Key
- IKEv2
- Internet Key Exchange Version 2
- IMS
- IP Multimedia Subsystem
- IMSI
- International Mobile Subscriber Identity
- IMT
- International Mobile Telecommunications
- IMT‐2020
- ITU‐R process for defining 5G IMT technologies
- InH
- Indoor Hotspot
- IoT
- Internet of Things
- IP
- Internet Protocol
- IPR
- Intellectual Property Rights
- IPsec
- Internet Protocol Security
- IR
- Incremental Redundancy
- ISDN
- Integrated Services Digital Network
- ISG
- Industry Specification Group
- ISI
- Inter Symbol Interference
- ISM
- Industrial Scientific and Medical
- ITS
- Intelligent Traffic Systems
- ITU
- International Telecommunications Union
- ITU‐R
- ITU Radiocommunication Sector
- IWF
- Interworking Function
- IWK
- Interworking
- KPI
- Key Performance Indicator
- LADN
- Local Area Data Network
- LAI
- Location Area Identity
- LAN
- Local Area Network
- LBO
- Local Breakout
- LCG
- Logical Channel Group
- LCH
- Logical Channel
- LCP
- Logical Channel Prioritization
- LCS
- Location Services
- LDPC
- Low‐Density Parity Check coding
- LLR
- Log‐Likelihood Ratio
- LLS
- Low‐Layer Split
- LMF
- Location Management Function
- LOS
- Line of Sight
- LPWA
- Low Power Wide Area
- LRF
- Location Retrieval Function
- LSA
- Licensed Shared Access
- LSB
- Least Significant Bit
- LTE
- Long Term Evolution
- LTE‐M
- LTE category M1
- M2M
- Machine to Machine
- MAC
- Media Access Control
- MC
- Multi‐Connectivity
- MCS
- Modulation and Coding Scheme
- MBMS
- Multimedia Broadcast / Multicast Service
- MCC
- Mobile Country Code
- MCG
- Master Cell Group
- MCL
- Maximum Coupling Loss
- MDBV
- Maximum Data Burst Volume
- ME
- Mobile Equipment
- MEC
- Multi‐Access Edge Computing
- MeNB
- Master eNB
- METIS
- Mobile and wireless communications Enablers for the Twenty‐twenty Information Society
- MFBR
- Maximum Flow Bitrate
- MFCN
- Mobile/Fixed Communication Network
- MIB
- Master Information Block
- MIB‐NB
- Master Information Block ‐ Narrowband
- MICO
- Mobile Initiated Communication Only
- ML
- Machine Learning
- MM
- Mobility Management
- MME
- Mobility Management Entity
- mMIMO
- massive Multiple‐Input‐Multiple‐Output
- mmWave
- millimeter Wave frequencies
- mMTC
- massive Machine Type Communication
- MN
- Master Node
- MNC
- Mobile Network Code
- MNO
- Mobile Network Operator
- MOTD
- Multilateration Observed Time Difference
- MPDCCH
- MTC Physical Downlink Control Channel
- MR‐DC
- Multi RAT Dual Connectivity
- MS
- Millisecond
- MSB
- Most Significant Bit
- MSG1…4
- Message 1 to 4 in RACH procedure
- MSI
- Minimum System Information
- MSC
- Mobile Switching Centre
- MSISDN
- Mobile Subscriber ISDN Number
- MSK
- Master Session Key
- MTA
- Multilateration Timing Advance
- MTC
- Machine Type Communication
- N3IWF
- Non‐3GPP Interworking Function
- NaaS
- Network as a Service
- NACK
- Negative Acknowledgement
- NAI
- Network Access Identifier
- NAPS
- Northbound API for SCEF ‐ SCS/AS Interworking
- NAS
- Non‐Access Stratum
- NAT
- Network Address Translation
- NB‐IoT
- Narrow Band IoT
- NCC
- Network Color Code
- NE‐DC
- NR E‐UTRAN ‐ Dual Connectivity
- NEF
- Network Exposure Function
- NF
- Network Function
- NFV
- Network Function Virtualization
- NGAP
- Next Generation Application Protocol
- NGEN‐DC
- Next Generation EN‐DC
- NGMN
- Next Generation Mobile Networks
- NG‐RAN
- Next Generation RAN
- NIDD
- Non‐IP Data Delivery
- NLOS
- Non‐Line of Sight
- NPBCH
- Narrowband Physical Broadcast Channel
- NPDCCH
- Narrowband Physical Downlink Control Channel
- NPDSCH
- Narrowband Physical Downlink Shared Channel
- NPRACH
- Narrowband Physical Random Access Channel
- NPSS
- Narrowband Primary Synchronization Signal
- NPUSCH
- Narrowband Physical Uplink Shared Channel
- NPV
- Net Present Value
- NR
- New Radio
- NRF
- Network Repository Function
- NRT
- Non‐Real Time
- NS
- Network Slice
- NSA
- Non‐Standalone
- NSSAI
- Network Slice Selection Assistance Information
- NSSF
- Network Slice Selection Function
- NSSS
- Narrowband Secondary Synchronization Signal
- O&M
- Operation and Maintenance
- OA&M
- Operations, Administration & Maintenance
- OAM
- Orbital Angular Momentum
- OAuth
- Open Authorization
- OECD
- Organization for Economic Co‐operation and Development
- OFDM
- Orthogonal Frequency‐Division Multiplexing
- ONF
- Open Networking Foundation
- OPEX
- Operating Expenses
- OSI
- Other System Information
- OTT
- Over‐the‐Top
- PA
- Power Amplifier
- PaaS
- Platform as a Service
- PACCH
- Packet Associated Control Channel
- PAPR
- Peak to Average Power Ratio
- PBCH
- Physical Broadcast Channel
- PC
- Personal Computer
- PCA
- Packet Control Acknowledgement
- PCC
- Policy and Charging Control
- PCCH
- Paging Control Channel
- PCell
- Primary Cell
- PCF
- Policy Control Function
- PCH
- Paging Channel
- PCI
- Physical Cell Identity
- PCO
- Protocol Configuration Options
- PCP
- Priority Code Point
- PDB
- Packet Delay Budget
- PDCCH
- Physical Downlink Control Channel
- PDCP
- Packet Data Convergence Protocol
- PDN
- Packet Data Network
- PDP
- Packet Data Protocol
- PDSCH
- Physical Downlink Shared Channel
- PDTCH
- Packet Data Traffic Channel
- PDU
- Protocol Data Unit
- PEI
- Permanent Equipment Identifier
- PEO
- Power Efficient Operation
- PER
- Packet Error Rate
- PFCP
- Packet Forwarding Control Protocol
- PFD
- Packet Flow Descriptor
- P‐GW
- PDN Gateway
- PGW‐C
- P‐GW Control Plane Function
- PGW‐U
- P‐GW User Plane Function
- PH
- Power Headroom
- PHY
- Physical Layer
- PHR
- Power Headroom Report
- PICH
- Paging Indication Channel
- PLMN
- Public Land Mobile Network
- PMI
- Precoding Matrix Indicator
- PoC
- Proof of Concept
- PON
- Passive Optical Network
- PPDR
- Public Protection and Disaster Relief
- PRACH
- Physical Random Access Channel
- PRB
- Physical Resource Blocks
- P‐RNTI
- Paging RNTI
- PS
- Packet Switched
- PSA
- PDU Session Anchor
- PSCell
- Primary Secondary Cell
- PSD
- Power Spectral Density
- PSM
- Power Save Mode
- PSTN
- Public Switched Telephone Network
- PSS
- Primary Synchronization Signal
- PTW
- Paging Time Window
- PUSCH
- Physical Uplink Shared Channel
- PWS
- Public Warning System
- QAM
- Quadrature Amplitude Modulation
- QC‐LDPC
- Quasi‐Cyclic LDPC
- QFI
- QoS Flow Identifier
- QoE
- Quality of Experience
- QoS
- Quality of Service
- QPSK
- Quaternary Phase‐Shift Keying
- R
- Code Rates in channel coding
- RA
- Routing Area
- RA
- Random Access
- RACH
- Random Access Channel
- RAN
- Radio Access Network
- RAR
- Random Access Response
- RAT
- Radio Access Technology
- RAU
- Routing Area Updating
- RB
- Radio Bearer
- RCC
- Radio Frequency Color Code
- RDI
- Reflective QoS flow to DRB mapping Indication
- RDS
- Reliable Data Service
- RF
- Radio Frequency
- RFC
- Request for Comments
- RG
- Residential Gateway
- RI
- Rank Indicator
- RIT
- Radio Interface Technology
- RLC
- Radio Link Control Protocol
- RLF
- Radio Link Failure
- RM
- Registration Management
- RM
- Reed‐Muller
- RMSI
- Remaining Minimum System Information
- RNTI
- Radio Network Temporary Identifier
- RO
- RACH Occasion
- RoHC
- Robust Header Compression
- RQI
- Reflective QoS Attribute
- RQoS
- Reflective QoS
- RRC
- Radio Resource Control Protocol
- RSRP
- Reference Signal Received Power
- RSRQ
- Reference Signal Received Quality
- RT
- Real Time
- RTT
- Round Trip Time
- RV
- Redundancy Version
- RX
- Receiver Exchange
- SA
- Standalone
- SAE
- System Architecture Evolution
- SAS
- Spectrum Access System
- SBA
- Service Based Architecture
- SC
- Successive‐Cancelation decoding
- SCell
- Secondary Cell
- SCEF
- Service Capability Exposure Function
- SCH
- Synchronization Channel
- SCS
- Services Capability Server
- SCS
- Sub‐Carrier Spacing
- SDAP
- Service Data Adaptation Protocol
- SDF
- Service Data Flow
- SDN
- Software Defined Networking
- SDO
- Standards Development Organization
- SDU
- Service Data Unit
- SEAF
- Security Anchor Functionality
- SEPP
- Secure Edge Protection Proxy
- SFN
- System Frame Number
- SgNB
- Secondary gNB
- SGSN
- Serving GPRS Support Node
- S‐GW
- Serving Gateway
- S‐GW‐C
- Serving Gateway Control Plane Function
- S‐GW‐U
- Serving Gateway User Plane Function
- SIM
- Subscriber Identity Module
- SINR
- Signal to Interference plus Noise Ratio
- SIP
- Session Initiation Protocol
- SLA
- Service Level Agreement
- SLAAC
- IPv6 Stateless Address Autoconfiguration
- SM
- Session Management
- SME
- Small and Medium Enterprises
- SMF
- Session Management Function
- SMLC
- Serving Mobile Location Centre
- SMS
- Short Message Service
- SN
- Secondary Node
- SN id
- Serving Network Identifier
- SNDCP
- Subnetwork Dependent Convergence Protocol
- SNR
- Signal to Noise Ratio
- S‐NSSAI
- Single NSSAI
- SON
- Self‐Organizing Networks
- SR
- Scheduling Request
- SRB
- Signaling Radio Bearer
- SRVCC
- Single Radio Voice Call Continuity
- SS
- Synchronization Signal
- SSB
- SS Block
- SSC
- Session and Service Continuity Mode
- SSH
- Secure Shell
- SSP
- Smart Secure Platform
- SSS
- Secondary Synchronization Signal Standalone
- S‐TMSI
- S‐Temporary Mobile Subscriber Identity
- SUCI
- Subscription Concealed Identifier
- SUL
- Supplementary / Supplemental Uplink
- SUPI
- Subscription Permanent Identifier
- TA
- Timing Advance
- TAU
- Tracking Area Updating
- TBC
- To Be Clarified
- TBS
- Transport Block Size
- TCH
- Traffic Channel
- TCP
- Transmission Control Protocol
- TDD
- Time Division Duplex
- TDF
- Traffic Detection Function
- TDMA
- Time Division Multiple Access
- TEID
- Tunnel Endpoint ID
- TLS
- Transport Layer Security
- TM
- Transparent Mode
- TMSI
- Temporary Mobile Subscriber Identity
- TN
- Timeslot Number
- TPM
- Trusted Platform Module
- TR
- Technical Report
- TRP
- Total Radiated Power
- TRP
- Transmission/Reception Point
- TS
- Technical Specification
- TSC
- Training Sequence Code
- TSDSI
- Telecommunications Standards Development Society India
- TSG
- Technical Specification Group
- TTA
- Telecommunications Technology Association
- TTC
- Telecommunication Technology Committee
- TTI
- Transmission Time Interval
- TWAG
- Trusted Wireless Lan Access Gateway
- TX
- Transmitter Exchange
- TXRU
- Transmitter Receiver Unit
- UCI
- Uplink Control Information
- UDM
- Unified Data Management
- UDR
- Unified Data Repository
- UDSF
- Unstructured Data Storage Function
- UE
- User Equipment
- UFMC
- Universally Filtered Multicarrier
- UICC
- Universal Integrated Circuit Card
- UL
- Uplink (UE to Network)
- UL CL
- Uplink Classifier
- UM
- Unacknowledged Mode
- Uma
- Urban Macro
- Umbi
- Urban Micro
- UDP
- User Datagram Protocol
- UMTS
- Universal Mobile Telecommunications System
- UP
- User Plane
- UPF
- User Plane Function
- URI
- Universal Resource Identifier
- URLLC
- Ultra‐Reliable Low Latency Communication
- URN
- Universal Resource Name
- USF
- Uplink State Flag
- USIM
- Universal Subscriber Identity Module
- UTRAN
- Universal Terrestrial Radio Access Network (3G RAN)
- V2I
- Vehicle‐to‐Infrastructure
- V2N
- Vehicle‐to‐Network
- V2V
- Vehicle‐to‐Vehicle
- V2X
- Vehicle‐to‐X, Vehicle to Everything
- VAMOS
- Voice services over Adaptive Multi‐user channels on One Slot
- VCC
- Voice Call Continuity
- VID
- VLAN Identifier
- VLAN
- Virtual Local Area Network
- VNF
- Virtual Network Function
- VoIP
- Voice over IP
- VoLTE
- Voice over LTE
- VoNR
- Voice over New Radio
- VPLMN
- Visited PLMN
- VPN
- Virtual Private Network
- VR
- Virtual Reality
- WAP
- Wireless Application Protocol
- WB‐E‐UTRAN
- Wide Band E‐UTRAN
- WCDMA
- Wideband Code Division Multiple Access
- WG
- Working Group
- Wi‐Fi
- Wireless Fidelity
- WLAN
- Wireless Local Area Network
- WLCP
- Wireless Local Area Network Control Plane Protocol
- WOLA
- Windowed Overlap‐and‐Add
- WRC
- World Radio Conference
- ZSM
- Zero touch network and Service Management
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