3GPP常用英文缩写全称大全
3GPP常用英文缩写全称大全
3GPP 3rd Generation Partnership Project
AAL ATM Adaptation Layer
AAL2 ATM Adaptation Layer of type 2
AAL5 ATM Adaptation Layer of type 5
A&C Authentication and Ciphering
ACFE Access Control Function Entity
AI Acquisition Indication
AICH Acquisition Indication Channel
ALCAP Access Link Control Application Part
AM Acknowledged Mode (of RLC)
AMR Adaptive Multi Rate (Transcoder)
AN Access Network
AOA Angle Of Arrival
AP Application Process
APDU Application Protocol Data Unit
APId Access Point Identifier
APN Access Point Name
APS Automatic Protection Switching
ARIB Association of Radio Industries and Business
ARQ Automatic Repeat Request
ASAP Alarm Severity Assignment Profile
ATC ATM Transfer Capability
ATM Asynchronous Transfer Mode
AUG Administrative Unit Group
AU-n Administrative Unit n with n being 4 or 3
AUTN Authentication Token
AWGN Added White Gaussian Noise
BCCH Broadcast Control Channel
BCH Broadcast Channel
BER Bit Error Rate
BLER Block Error Rate
BMC Broadcast Multicast Controller
BPSK Binary Phase Shift Keying
BS Base Station
BSC Base Station Controller
BSS Base Station System
BTS Base Transceiver Station
C- Control-
CA Capacity Allocation
CAA Capacity Allocation Acknowledgement
CAC Connection Admission Control
CAMEL Customized Applications for Mobile network Enhanced Logic
CAS Channel Associated Signalling
CASC Current Alarm Summary Control
CBR Constant Bit Rate
CC Call Control
CCBS Call Completion Busy Subscriber
CCCH Common Control Channel
CCH Control Channel
CCP Communication Control Port
CCPCH Common Control Physical Channel
CCTrCH Coded Composite Transport Channel
CD Capacity Deallocation (radio context)
CD Calibration Data (O&M context)
CDA Capacity Deallocation Acknowledgement
CDMA Code Division Multiple Access
CDR Charging Detail Record
CDV Cell Delay Variation
CDVT Cell Delay Variation Tolerance
CFN Connection Frame Number
CID Channel Identifier
Ck Cipher Key
CLP Cell Loss Priority
CM Configuration Management
CM Call Management (in e.g. CM Service Request)
CmCH Common Transport Channel
CMIP Common Management Information Protocol
CMIS Common Management Information Service
CMISE Common Management Information Service Element
CN Core Network
C-n Container-n (n=1-4)
COL Collocated Equipment
CP Chip Period
CPCH Common Packet Channel
CPICH Common Pilot Channel
CPS Common Part Sublayer
CRC Cyclic Redundancy Check
CRCI CRC Indicator
CRC-N Cyclic Redundancy Check-N
CRNC Controlling RNC
c-RNTI RNTI allocated by CRNC
CS Circuit Switched
CSES Consecutive Severely Errored Second
CSN Ciphering Sequence Number
CSUM Checksum
CTCH Common Traffic Channel
CTDMA Code Time Division Multiple Access
CTP Connection Termination Point (OAM context)
CTP Common Transport Protocol (Protocol context)
DBR Deterministic Bit Rate
DC Dedicated Control (SAP)
DCA Dynamic Channel Allocation
DCCH Dedicated Control Channel
DCH Dedicated Channel
DCN Data Communication Network
DL DownLink
DoCoMo Do Communication with Mobiles
DPCCH Dedicated Physical Control Channel
DPCH Dedicated Physical Channel
DPDCH Dedicated Physical Data Channel
DRAC Dynamic Resource Allocation Control
DRNC Drift RNC
DRNS Drift RNS
DRX Discontinuous Reception
DS-CDMA Direct-Sequence Code Division Multiple Access
DSCH Downlink Shared Channel
DT Data Transport
DTCH Dedicated Traffic Channel
DTX Discontinuous Transmission
EBER Excessive Bit Error Ratio
ECASC Extended Current Summary Alarm Control
EFCI Explicit Forward Congestion Indication
EFD Event Forwarding Discriminator
EIR Equipment Identity Register
EIRP Equivalent Isotropic Radiated Power
E-OTD Enhanced OTD
ES Errored Second
ETSI European Telecommunication Standardisation Institute
F8 access link encryption function
FACH Forward Access Channel
FAUSCH Fast Uplink Signalling Channel
FBI Feed Back Indicator
FCS Frame Check Sequence
FDD Frequency Division Duplex
FDMA Frequency Division Multiple Access
FEC Forward Error Correction
FEEB Far End Errored Block
FEES Far End Errored Second
FER Frame Erasure Rate
FESES Far End Severely Errored Second
FFS For Further Study
FM Fault Management
FP Frame Protocol
FTAM File Transfer Access Management
FTP File Transfer Protocol
Gb Gb interface (between SGSN and BSC)
GC General Control (SAP)
GCRA Generic Cell Rate Algorithm
GFR Guaranteed Rate
GGSN Gateway GPRS Serving Node
GMM MM for GPRS services
GMSK Gaussian Minimum Shift Keying
G-PDU T-PDU plus GTP header
GPRS General Packet Radio Service
GPRS-CSI GPRS CAMEL Subscription Information
GPS Global Positioning System
GRNC Generic RNC
GSM Global System for Mobile communications
GTP GPRS Tunnelling Protocol
GTP-u GTP user plane
HCS Hierarchical Cell Structure
HE Home Environment
HEC Header Error Control
HFN Hyper Frame Number
HHO Hard Handover
HO Handover
HOP High Order Path
HOVC Higher Order Virtual Container
IBTS uplink Interference signal power level at Node B
ICB Inter Carrier Board
ICD Interface Control Document
ICH Indicator CHannel
ICI Inter Carrier Interface
IE Information Element
IEC Incoming Error Count
IETF Internet Engineering Task Force
IK Integrity Key
IMA Inverse Multiplexing for ATM
IMEI International Mobile Equipment Identity
IMEISV International Mobile Equipment Identity Software Version
IMSI International Mobile Subscriber Identity (identical for IMUI; used in GSM context)
IMUI International Mobile User Identity (identical to IMSI; seems to replace IMSI in UMTS context)
INI Inter Network Interface
IP Internet Protocol
ISCP Interference Signal Code Power
ISDN Integrated Services Digital Network
ISF Incoming Signal Failure
IS-FL Idle Slot Forward Link
ISID Idle Signal Identification
ISO International Organisation for Standardization
IT Information Technology
ITU International Telecommunication Union
Iu Reference point between Access and Serving Network domains
Iub Iub interface (between Node B and RNC)
Iu-CS Iu towards the Circuit Switched-Service Domain of the Core Network
Iu-PS Iu towards the Packet Switched-Service Domain of the Core Network
Iur Iur interface (between RNC and RNC)
IWF Inter Working Function
IWU Inter Working Unit
JD Joint Detection
Kbps kilo-bits per second
KSI Key Set Identifier
Ksps kilo-symbols per second
L1 Layer 1 (physical layer)
L2 Layer 2 (data link layer)
L3 Layer 3 (network layer)
L3-CE Layer 3 Compression Entity
LAC Link Access Control
LAI Location Area Identity
LAN Local Area Network
LAPD Link Access Protocol for D-channel
LB Laser Bias
LCAF Location Client Authorisation Function
LCCF Location Client Control Function
LCCTF Location Client Coordinate Transformation Function
LCD Loss of Cell Delineation (transmission context)
LCD Low Constrained Delay (traffic context)
LCF Location Client Function
LCS Localisation Client Service
LDD Low Delay Data
LIR Limited IP Routing entity (in the RNC)
LLC Link Layer Control
LMT Local Maintenance Terminal
LNA Low Noise Amplifier
LOF Loss of Frame
LOP Low Order Path
LOP Loss of Pointer
LOS Loss of Signal
LPA Linear Power Amplifier
LSA Localised Service Area
LSB Least Significant Bit
LSBF Location System Billing Function
LSCF Location System Control Function
LSN Local Sub Network
LSPF Location Subscriber Privacy Function
LT Laser Temperature
LTOA Latest Time of Arrival
MA Multiple Access
MAC Medium Access Control
MAC-c MAC entity handling common channels (RACH, FACH)
MAC-d MAC entity handling dedicated channels (DCH)
MAC-I Message Authentication Code used for data Integrity of signalling messages
MAC-sh MAC entity handling shared channel (DSCH)
MAHO Mobile Assisted Handover
MBS Maximum Burst Size
MCC Mobile Country Code
MCD Manual Configuration Data
Mcps Mega-chips per second
MD Macro-diversity
ME Mobile Equipment
MEHO Mobile evaluated handover
MIB Management Information Base
MM Mobility Management
MNC Mobile Network Code
MNRG Mobile station Not Reachable for GPRS flag
MNRR Mobile station Not Reachable Reason
MO Mobile Originated
MOHO Mobile Originated Handover
MS Multiplex Section (transmission context)
MS Mobile Station (GSM or security context)
MS-AIS Multiplex Section Alarm Indication Signal
MSB Most Significant Bit
MSC Multi-Slot Cell (MPSR context)
MSC Mobile services Switching Centre (Core Network Context)
MSID Mobile Station Identifier
MSOH Multiplex Section Overhead
MSP Multiplex Section Protection
MS-RDI Multiplex Section Remote Defect Indication
MS-REI Multiplex Section Remote Error Indication
MSTE Multiplex Section Terminating Element
MT Mobile Terminated (call context)
MT Mobile Terminal (equipment context)
MTP Message Transfer Part
MUI Mobile User Identifier
NAS Non Access Stratum
NBAP Node B Application Part
NCP Node B Control Port
NCSES Number of Consecutive Severely Errored Second
NDF New Data Flag
NE Network Element
NEHO Network evaluated handover
NEM Network Element Manager
NMC Network Management Centre
NNI Network Node Interface (includes INI and ICI interfaces)
NP Nectar Pilot
NPC Network Parameters Control
NRT Non-Real Time
NSS Network Sub System
NT Nectar Telecom
Nt Notification (SAP)
NW Network
N-PDU Network PDU
O&M Operation and Maintenance
OAM Operation Administration and Maintenance
OCCCH ODMA Common Control Channel
ODCCH ODMA Dedicated Control Channel
ODCH ODMA Dedicated Channel
ODI Outgoing Defect Indication
ODMA Opportunity Driven Multiple Access
ODTCH ODMA Dedicated Traffic Channel
OEI Outgoing Error Indication
OFS Out of Frame Second
OMC Operation and Maintenance Centre
OOF Out of Frame
ORACH ODMA Random Access Channel
OS Operation System
OSF Offset Field
OSI Open System Interconnection
OSL Optical Signal Level
OTD Observed Time Difference
OVSF Orthogonal Variable Spreading Factor
PA Power Amplifier
PC Power Control
PCCH Paging Control Channel
PCF Positioning Calculation Function
PCH Paging Channel
PCM Pulse Code Modulation
PCR Peak Cell Rate
PDCP Packet Data Convergence protocol
PDH Plesiochronous Digital Hierarchy
PDN Packet Data Network
PDP Packet Data Protocol
PDU Protocol Data Unit
PG Processing Gain
PHY Physical layer
PhyCH Physical Channel
PI Paging Indicator
PICH Page Indicator Channel
PID Packet Identification
PJC Pointer Justification Count
PJE Pointer Justification Event
Pkg Packages
PLM Payload Mismatch
PLMN Public Land Mobile Network
PM Performance Management/Performance Monitoring
PMM MM for PS domain
PN Pseudo Noise
POH Path Overhead
PPI Plesiochronous Physical Interface
PPM Parts Per Million
PRACH Physical Random Access Channel
PRCF Positioning Radio Co-ordination Function
PS Packet Switched
PSAP Presentation Service Access Point
PSC Protection Switch Count
PSD Protection Switch Duration
PSMF Positioning Signal Measurement Function
PSN Plane Switch Node
PSTN Public Switched Telephone Network
PTE Path Terminating Element
PVC Permanent Virtual Connection
P-TMSI Packet TMSI (equivalent to P-TMUI, used in GPRS context)
P-TMUI Packet TMUI – (equivalent to P-TMSI, new name for it in the UMTS context)
PTR Pointer
PUF Power Up Function
QE Quality Estimate
QoS Quality of Service
QPSK Quadrature Phase Shift Keying
RA Routing Area
RAB Radio Access Bearer
RAC Routing Area Code
RAC Radio Admission Control
RACH Random Access Channel
RAI Routing Area Identity (GPRS or Iu-PS context)
RAI Remote Alarm Indication (transmission context)
RAID Redundant Array of Independent Disks
RAN Radio Access Network
RANAP Radio Access Network Application Part
RAND Random Challenge
RB Radio Bearer
RDI Remote Defect Indication
RDN Relative Distinguished Name
REI Remote Error Indication
RF Radio Frequency
RFC Request For Comment
RFN Reference Frame Number
RLC Radio Link Control
RLCP Radio Link Control Protocol
RLS Radio Link Set
RLs Radio Links
RNC Radio Network Controller
RNCC Radio Network Connection Control
RNS Radio Network Subsystem
RNSAP Radio Network Subsystem Application Part
RNTI Radio Network Temporary Identity
RP Radio Processing
RRC Radio Resource Control
RRM Radio Resource Management
RS Regenerator section
RSCP Received Signal Code Power after despreading
RSOH Regenerator Section Overhead
RSSI Received Signal Strength Indicator
RT Real Time
RU Resource Unit
RX Receive
SAAL Signalling AAL (equivalent to SSCF over SSCOP over AAL5)
SACCH Slow Associated Control Channel
SAP Service Access Point
SBR Statistical Bit Rate
SC Service Control
SCCH Synchronization Control Channel
SCCP Signalling Connection Control Part
SCD Selective Cell Discard
SCH Synchronization Channel
SCR Sustainable Cell Rate
SCTP Simple Control Transmission Protocol
SD Supervision Data (context configuration management)
SD Signal Degrade (context SDH)
SDCCH Stand-Alone Dedicated Control Channel
SDH Synchronous Digital Hierarchy
SDU Service Data Unit
SES Severely Errored Second
SF Signal Fail (transmission context)
SF Spreading Factor (radio context)
SFN System Frame Number
SG Study Group
SGSN Serving GPRS Support Node
SHO Soft Hand Over
SIM Subscriber Information Module
SIR Signal-to-Interference Ratio
SLM Signal Label Mismatch
SMS Short Message Service
SN Serving Network
SN Sequence Number
SNMP Simple Network Management Protocol
SOH Section Overhead
SONET Synchronous Optical Network
SP Switching Point
SPA Signalling Point Accessible
SPI Signalling Point Inaccessible (SS7 context)
SPI Synchronous Physical Interface (SDH context)
SPROC System PROCessor
SRNC Serving RNC
SRNS Serving RNS
s-RNTI RNTI allocated by SRNC
SSA Signalling Subsystem Accessible
SSADT Service Specific Assured Data Transfer
SSCF Service Specific Coordination Function
SSCOP Service Specific Connection-Oriented Protocol
SSP Signalling Subsystem Prohibited
SSSAR Service Specific Segmentation And Reassembly
SSTED Service Specific Transmission Error Detection
STF Start Field
STM Synchronous Transport Module
STM(-N) Synchronous Transport Module (-N)
STS(-N) Synchronous Transport Signal (-N)
STTD Space Time Transmit Diversity
TB Transport Block
TBC To Be Confirmed
TBD To Be Defined
TBF Transport Block Format
TBS Transport Block Set
TCH Traffic Channel
TCM Tandem Connection Monitoring
TCOH Tandem Connection Overhead
TCP Transport Control Protocol
TCP Transport Control Protocol
TC-RDI Tandem Connection Remote Defect Indication
TC-REI Tandem Connection Remote Error Indication
TCT Tandem Connection Trace
TCTE Tandem Connection Terminating Element
TDD Time Duplex Division
TE Terminal Equipment
TEID Tunnel Endpoint ID
TFCI Transport Format Combination Indicator
TFCS Transport Format Combination Set
TFI Transport Format Indicator
TFS Transport Format Set
TFT Traffic Flow Template
TFTP Trivial File Transfer Protocol
TIM Trace Identifier Mismatch
TLLI Temporary Logical Link Identifier
TM Transparent Mode (of RLC)
TMN Telecommunication Management Network
TMSI Temporary Mobile Subscriber Identity (used in GSM context, equivalent to TMUI)
TMUI Temporary Mobile User Identity (new name for TMSI in the UMTS context)
TN Termination Node
TOA or ToA Time Of Arrival
TOAWE TOA Window End point
TOAWS TOA Window Start point
TP Termination Point
TPC Transmit Power Control
T-PDU Original packet, for example an IP datagram, from UE or an external PDN
TR Threshold Reset
TRX Transmitter/Receiver
TSID Test Signal Identification
TSS Telecommunication Standardization Sector
TTC Telecommunication Technology Committee
TTI Time Transmission Interval (Radio Context)
TTI Trail Trace Identifier (O&M context)
TTP Trusted Third Party (security context)
TTP Trail Termination Point (transmission context)
TU Tributary Unit
TUG Tributary Unit Group
TUG(-n) Tributary Unit Group (-n)
TU-n Tributary Unit-n
TX Transmit
U- User-
UARFCN UTRA Absolute Radio Frequency Channel Number
UAS Unavailable Second
UBR Unspecified Bit Rate
UDD Unconstrained Delay Data
UDP User Datagram Protocol
UE User Equipment
UEA UMTS Encryption Algorithm
UEFN User Equipment Frame Number
UIA UMTS Integrity Algorithm
UL UpLink
UM Unacknowledged Mode (of RLC)
UMTS Universal Mobile Telecommunication System
UNEQ Unequipped
UNI User to Network Interface
UP User Plane
UPC Usage Parameters Control
URA User Registration Area
USCH Uplink Shared CHannel
USIM UMTS Subscriber Identity Module
UTRA UMTS Terrestrial Radio Access
UTRAN UMTS Terrestrial Radio Access Network
Uu Reference point between User Equipment and Infrastructure domains, UMTS radio interface
UUI User to User Indicator
VA Voice Activity (factor)
VBR Variable Bit Rate
VC Virtual Channel
VCC Virtual Channel Connection
VCI Virtual Channel Identifier
VC-n Virtual Container n (n is 11, 12, 2, 3 or 4)
VLR Visitor Location Register
VP Virtual Path
VPC Virtual Path Connection
VPI Virtual Path Identifier
W-CDMA Wideband CDMA
WG Working Group
WG-n Working Group (of 3GPP)
WTR Wait-to-Restore
XMAC-I eXpected Message Authentication Code used for data Integrity of signalling messages
XOR eXclusive OR
XPU AuXiliary Processing Unit
XRES Expected Response
AAL ATM Adaptation Layer
AAL2 ATM Adaptation Layer of type 2
AAL5 ATM Adaptation Layer of type 5
A&C Authentication and Ciphering
ACFE Access Control Function Entity
AI Acquisition Indication
AICH Acquisition Indication Channel
ALCAP Access Link Control Application Part
AM Acknowledged Mode (of RLC)
AMR Adaptive Multi Rate (Transcoder)
AN Access Network
AOA Angle Of Arrival
AP Application Process
APDU Application Protocol Data Unit
APId Access Point Identifier
APN Access Point Name
APS Automatic Protection Switching
ARIB Association of Radio Industries and Business
ARQ Automatic Repeat Request
ASAP Alarm Severity Assignment Profile
ATC ATM Transfer Capability
ATM Asynchronous Transfer Mode
AUG Administrative Unit Group
AU-n Administrative Unit n with n being 4 or 3
AUTN Authentication Token
AWGN Added White Gaussian Noise
BCCH Broadcast Control Channel
BCH Broadcast Channel
BER Bit Error Rate
BLER Block Error Rate
BMC Broadcast Multicast Controller
BPSK Binary Phase Shift Keying
BS Base Station
BSC Base Station Controller
BSS Base Station System
BTS Base Transceiver Station
C- Control-
CA Capacity Allocation
CAA Capacity Allocation Acknowledgement
CAC Connection Admission Control
CAMEL Customized Applications for Mobile network Enhanced Logic
CAS Channel Associated Signalling
CASC Current Alarm Summary Control
CBR Constant Bit Rate
CC Call Control
CCBS Call Completion Busy Subscriber
CCCH Common Control Channel
CCH Control Channel
CCP Communication Control Port
CCPCH Common Control Physical Channel
CCTrCH Coded Composite Transport Channel
CD Capacity Deallocation (radio context)
CD Calibration Data (O&M context)
CDA Capacity Deallocation Acknowledgement
CDMA Code Division Multiple Access
CDR Charging Detail Record
CDV Cell Delay Variation
CDVT Cell Delay Variation Tolerance
CFN Connection Frame Number
CID Channel Identifier
Ck Cipher Key
CLP Cell Loss Priority
CM Configuration Management
CM Call Management (in e.g. CM Service Request)
CmCH Common Transport Channel
CMIP Common Management Information Protocol
CMIS Common Management Information Service
CMISE Common Management Information Service Element
CN Core Network
C-n Container-n (n=1-4)
COL Collocated Equipment
CP Chip Period
CPCH Common Packet Channel
CPICH Common Pilot Channel
CPS Common Part Sublayer
CRC Cyclic Redundancy Check
CRCI CRC Indicator
CRC-N Cyclic Redundancy Check-N
CRNC Controlling RNC
c-RNTI RNTI allocated by CRNC
CS Circuit Switched
CSES Consecutive Severely Errored Second
CSN Ciphering Sequence Number
CSUM Checksum
CTCH Common Traffic Channel
CTDMA Code Time Division Multiple Access
CTP Connection Termination Point (OAM context)
CTP Common Transport Protocol (Protocol context)
DBR Deterministic Bit Rate
DC Dedicated Control (SAP)
DCA Dynamic Channel Allocation
DCCH Dedicated Control Channel
DCH Dedicated Channel
DCN Data Communication Network
DL DownLink
DoCoMo Do Communication with Mobiles
DPCCH Dedicated Physical Control Channel
DPCH Dedicated Physical Channel
DPDCH Dedicated Physical Data Channel
DRAC Dynamic Resource Allocation Control
DRNC Drift RNC
DRNS Drift RNS
DRX Discontinuous Reception
DS-CDMA Direct-Sequence Code Division Multiple Access
DSCH Downlink Shared Channel
DT Data Transport
DTCH Dedicated Traffic Channel
DTX Discontinuous Transmission
EBER Excessive Bit Error Ratio
ECASC Extended Current Summary Alarm Control
EFCI Explicit Forward Congestion Indication
EFD Event Forwarding Discriminator
EIR Equipment Identity Register
EIRP Equivalent Isotropic Radiated Power
E-OTD Enhanced OTD
ES Errored Second
ETSI European Telecommunication Standardisation Institute
F8 access link encryption function
FACH Forward Access Channel
FAUSCH Fast Uplink Signalling Channel
FBI Feed Back Indicator
FCS Frame Check Sequence
FDD Frequency Division Duplex
FDMA Frequency Division Multiple Access
FEC Forward Error Correction
FEEB Far End Errored Block
FEES Far End Errored Second
FER Frame Erasure Rate
FESES Far End Severely Errored Second
FFS For Further Study
FM Fault Management
FP Frame Protocol
FTAM File Transfer Access Management
FTP File Transfer Protocol
Gb Gb interface (between SGSN and BSC)
GC General Control (SAP)
GCRA Generic Cell Rate Algorithm
GFR Guaranteed Rate
GGSN Gateway GPRS Serving Node
GMM MM for GPRS services
GMSK Gaussian Minimum Shift Keying
G-PDU T-PDU plus GTP header
GPRS General Packet Radio Service
GPRS-CSI GPRS CAMEL Subscription Information
GPS Global Positioning System
GRNC Generic RNC
GSM Global System for Mobile communications
GTP GPRS Tunnelling Protocol
GTP-u GTP user plane
HCS Hierarchical Cell Structure
HE Home Environment
HEC Header Error Control
HFN Hyper Frame Number
HHO Hard Handover
HO Handover
HOP High Order Path
HOVC Higher Order Virtual Container
IBTS uplink Interference signal power level at Node B
ICB Inter Carrier Board
ICD Interface Control Document
ICH Indicator CHannel
ICI Inter Carrier Interface
IE Information Element
IEC Incoming Error Count
IETF Internet Engineering Task Force
IK Integrity Key
IMA Inverse Multiplexing for ATM
IMEI International Mobile Equipment Identity
IMEISV International Mobile Equipment Identity Software Version
IMSI International Mobile Subscriber Identity (identical for IMUI; used in GSM context)
IMUI International Mobile User Identity (identical to IMSI; seems to replace IMSI in UMTS context)
INI Inter Network Interface
IP Internet Protocol
ISCP Interference Signal Code Power
ISDN Integrated Services Digital Network
ISF Incoming Signal Failure
IS-FL Idle Slot Forward Link
ISID Idle Signal Identification
ISO International Organisation for Standardization
IT Information Technology
ITU International Telecommunication Union
Iu Reference point between Access and Serving Network domains
Iub Iub interface (between Node B and RNC)
Iu-CS Iu towards the Circuit Switched-Service Domain of the Core Network
Iu-PS Iu towards the Packet Switched-Service Domain of the Core Network
Iur Iur interface (between RNC and RNC)
IWF Inter Working Function
IWU Inter Working Unit
JD Joint Detection
Kbps kilo-bits per second
KSI Key Set Identifier
Ksps kilo-symbols per second
L1 Layer 1 (physical layer)
L2 Layer 2 (data link layer)
L3 Layer 3 (network layer)
L3-CE Layer 3 Compression Entity
LAC Link Access Control
LAI Location Area Identity
LAN Local Area Network
LAPD Link Access Protocol for D-channel
LB Laser Bias
LCAF Location Client Authorisation Function
LCCF Location Client Control Function
LCCTF Location Client Coordinate Transformation Function
LCD Loss of Cell Delineation (transmission context)
LCD Low Constrained Delay (traffic context)
LCF Location Client Function
LCS Localisation Client Service
LDD Low Delay Data
LIR Limited IP Routing entity (in the RNC)
LLC Link Layer Control
LMT Local Maintenance Terminal
LNA Low Noise Amplifier
LOF Loss of Frame
LOP Low Order Path
LOP Loss of Pointer
LOS Loss of Signal
LPA Linear Power Amplifier
LSA Localised Service Area
LSB Least Significant Bit
LSBF Location System Billing Function
LSCF Location System Control Function
LSN Local Sub Network
LSPF Location Subscriber Privacy Function
LT Laser Temperature
LTOA Latest Time of Arrival
MA Multiple Access
MAC Medium Access Control
MAC-c MAC entity handling common channels (RACH, FACH)
MAC-d MAC entity handling dedicated channels (DCH)
MAC-I Message Authentication Code used for data Integrity of signalling messages
MAC-sh MAC entity handling shared channel (DSCH)
MAHO Mobile Assisted Handover
MBS Maximum Burst Size
MCC Mobile Country Code
MCD Manual Configuration Data
Mcps Mega-chips per second
MD Macro-diversity
ME Mobile Equipment
MEHO Mobile evaluated handover
MIB Management Information Base
MM Mobility Management
MNC Mobile Network Code
MNRG Mobile station Not Reachable for GPRS flag
MNRR Mobile station Not Reachable Reason
MO Mobile Originated
MOHO Mobile Originated Handover
MS Multiplex Section (transmission context)
MS Mobile Station (GSM or security context)
MS-AIS Multiplex Section Alarm Indication Signal
MSB Most Significant Bit
MSC Multi-Slot Cell (MPSR context)
MSC Mobile services Switching Centre (Core Network Context)
MSID Mobile Station Identifier
MSOH Multiplex Section Overhead
MSP Multiplex Section Protection
MS-RDI Multiplex Section Remote Defect Indication
MS-REI Multiplex Section Remote Error Indication
MSTE Multiplex Section Terminating Element
MT Mobile Terminated (call context)
MT Mobile Terminal (equipment context)
MTP Message Transfer Part
MUI Mobile User Identifier
NAS Non Access Stratum
NBAP Node B Application Part
NCP Node B Control Port
NCSES Number of Consecutive Severely Errored Second
NDF New Data Flag
NE Network Element
NEHO Network evaluated handover
NEM Network Element Manager
NMC Network Management Centre
NNI Network Node Interface (includes INI and ICI interfaces)
NP Nectar Pilot
NPC Network Parameters Control
NRT Non-Real Time
NSS Network Sub System
NT Nectar Telecom
Nt Notification (SAP)
NW Network
N-PDU Network PDU
O&M Operation and Maintenance
OAM Operation Administration and Maintenance
OCCCH ODMA Common Control Channel
ODCCH ODMA Dedicated Control Channel
ODCH ODMA Dedicated Channel
ODI Outgoing Defect Indication
ODMA Opportunity Driven Multiple Access
ODTCH ODMA Dedicated Traffic Channel
OEI Outgoing Error Indication
OFS Out of Frame Second
OMC Operation and Maintenance Centre
OOF Out of Frame
ORACH ODMA Random Access Channel
OS Operation System
OSF Offset Field
OSI Open System Interconnection
OSL Optical Signal Level
OTD Observed Time Difference
OVSF Orthogonal Variable Spreading Factor
PA Power Amplifier
PC Power Control
PCCH Paging Control Channel
PCF Positioning Calculation Function
PCH Paging Channel
PCM Pulse Code Modulation
PCR Peak Cell Rate
PDCP Packet Data Convergence protocol
PDH Plesiochronous Digital Hierarchy
PDN Packet Data Network
PDP Packet Data Protocol
PDU Protocol Data Unit
PG Processing Gain
PHY Physical layer
PhyCH Physical Channel
PI Paging Indicator
PICH Page Indicator Channel
PID Packet Identification
PJC Pointer Justification Count
PJE Pointer Justification Event
Pkg Packages
PLM Payload Mismatch
PLMN Public Land Mobile Network
PM Performance Management/Performance Monitoring
PMM MM for PS domain
PN Pseudo Noise
POH Path Overhead
PPI Plesiochronous Physical Interface
PPM Parts Per Million
PRACH Physical Random Access Channel
PRCF Positioning Radio Co-ordination Function
PS Packet Switched
PSAP Presentation Service Access Point
PSC Protection Switch Count
PSD Protection Switch Duration
PSMF Positioning Signal Measurement Function
PSN Plane Switch Node
PSTN Public Switched Telephone Network
PTE Path Terminating Element
PVC Permanent Virtual Connection
P-TMSI Packet TMSI (equivalent to P-TMUI, used in GPRS context)
P-TMUI Packet TMUI – (equivalent to P-TMSI, new name for it in the UMTS context)
PTR Pointer
PUF Power Up Function
QE Quality Estimate
QoS Quality of Service
QPSK Quadrature Phase Shift Keying
RA Routing Area
RAB Radio Access Bearer
RAC Routing Area Code
RAC Radio Admission Control
RACH Random Access Channel
RAI Routing Area Identity (GPRS or Iu-PS context)
RAI Remote Alarm Indication (transmission context)
RAID Redundant Array of Independent Disks
RAN Radio Access Network
RANAP Radio Access Network Application Part
RAND Random Challenge
RB Radio Bearer
RDI Remote Defect Indication
RDN Relative Distinguished Name
REI Remote Error Indication
RF Radio Frequency
RFC Request For Comment
RFN Reference Frame Number
RLC Radio Link Control
RLCP Radio Link Control Protocol
RLS Radio Link Set
RLs Radio Links
RNC Radio Network Controller
RNCC Radio Network Connection Control
RNS Radio Network Subsystem
RNSAP Radio Network Subsystem Application Part
RNTI Radio Network Temporary Identity
RP Radio Processing
RRC Radio Resource Control
RRM Radio Resource Management
RS Regenerator section
RSCP Received Signal Code Power after despreading
RSOH Regenerator Section Overhead
RSSI Received Signal Strength Indicator
RT Real Time
RU Resource Unit
RX Receive
SAAL Signalling AAL (equivalent to SSCF over SSCOP over AAL5)
SACCH Slow Associated Control Channel
SAP Service Access Point
SBR Statistical Bit Rate
SC Service Control
SCCH Synchronization Control Channel
SCCP Signalling Connection Control Part
SCD Selective Cell Discard
SCH Synchronization Channel
SCR Sustainable Cell Rate
SCTP Simple Control Transmission Protocol
SD Supervision Data (context configuration management)
SD Signal Degrade (context SDH)
SDCCH Stand-Alone Dedicated Control Channel
SDH Synchronous Digital Hierarchy
SDU Service Data Unit
SES Severely Errored Second
SF Signal Fail (transmission context)
SF Spreading Factor (radio context)
SFN System Frame Number
SG Study Group
SGSN Serving GPRS Support Node
SHO Soft Hand Over
SIM Subscriber Information Module
SIR Signal-to-Interference Ratio
SLM Signal Label Mismatch
SMS Short Message Service
SN Serving Network
SN Sequence Number
SNMP Simple Network Management Protocol
SOH Section Overhead
SONET Synchronous Optical Network
SP Switching Point
SPA Signalling Point Accessible
SPI Signalling Point Inaccessible (SS7 context)
SPI Synchronous Physical Interface (SDH context)
SPROC System PROCessor
SRNC Serving RNC
SRNS Serving RNS
s-RNTI RNTI allocated by SRNC
SSA Signalling Subsystem Accessible
SSADT Service Specific Assured Data Transfer
SSCF Service Specific Coordination Function
SSCOP Service Specific Connection-Oriented Protocol
SSP Signalling Subsystem Prohibited
SSSAR Service Specific Segmentation And Reassembly
SSTED Service Specific Transmission Error Detection
STF Start Field
STM Synchronous Transport Module
STM(-N) Synchronous Transport Module (-N)
STS(-N) Synchronous Transport Signal (-N)
STTD Space Time Transmit Diversity
TB Transport Block
TBC To Be Confirmed
TBD To Be Defined
TBF Transport Block Format
TBS Transport Block Set
TCH Traffic Channel
TCM Tandem Connection Monitoring
TCOH Tandem Connection Overhead
TCP Transport Control Protocol
TCP Transport Control Protocol
TC-RDI Tandem Connection Remote Defect Indication
TC-REI Tandem Connection Remote Error Indication
TCT Tandem Connection Trace
TCTE Tandem Connection Terminating Element
TDD Time Duplex Division
TE Terminal Equipment
TEID Tunnel Endpoint ID
TFCI Transport Format Combination Indicator
TFCS Transport Format Combination Set
TFI Transport Format Indicator
TFS Transport Format Set
TFT Traffic Flow Template
TFTP Trivial File Transfer Protocol
TIM Trace Identifier Mismatch
TLLI Temporary Logical Link Identifier
TM Transparent Mode (of RLC)
TMN Telecommunication Management Network
TMSI Temporary Mobile Subscriber Identity (used in GSM context, equivalent to TMUI)
TMUI Temporary Mobile User Identity (new name for TMSI in the UMTS context)
TN Termination Node
TOA or ToA Time Of Arrival
TOAWE TOA Window End point
TOAWS TOA Window Start point
TP Termination Point
TPC Transmit Power Control
T-PDU Original packet, for example an IP datagram, from UE or an external PDN
TR Threshold Reset
TRX Transmitter/Receiver
TSID Test Signal Identification
TSS Telecommunication Standardization Sector
TTC Telecommunication Technology Committee
TTI Time Transmission Interval (Radio Context)
TTI Trail Trace Identifier (O&M context)
TTP Trusted Third Party (security context)
TTP Trail Termination Point (transmission context)
TU Tributary Unit
TUG Tributary Unit Group
TUG(-n) Tributary Unit Group (-n)
TU-n Tributary Unit-n
TX Transmit
U- User-
UARFCN UTRA Absolute Radio Frequency Channel Number
UAS Unavailable Second
UBR Unspecified Bit Rate
UDD Unconstrained Delay Data
UDP User Datagram Protocol
UE User Equipment
UEA UMTS Encryption Algorithm
UEFN User Equipment Frame Number
UIA UMTS Integrity Algorithm
UL UpLink
UM Unacknowledged Mode (of RLC)
UMTS Universal Mobile Telecommunication System
UNEQ Unequipped
UNI User to Network Interface
UP User Plane
UPC Usage Parameters Control
URA User Registration Area
USCH Uplink Shared CHannel
USIM UMTS Subscriber Identity Module
UTRA UMTS Terrestrial Radio Access
UTRAN UMTS Terrestrial Radio Access Network
Uu Reference point between User Equipment and Infrastructure domains, UMTS radio interface
UUI User to User Indicator
VA Voice Activity (factor)
VBR Variable Bit Rate
VC Virtual Channel
VCC Virtual Channel Connection
VCI Virtual Channel Identifier
VC-n Virtual Container n (n is 11, 12, 2, 3 or 4)
VLR Visitor Location Register
VP Virtual Path
VPC Virtual Path Connection
VPI Virtual Path Identifier
W-CDMA Wideband CDMA
WG Working Group
WG-n Working Group (of 3GPP)
WTR Wait-to-Restore
XMAC-I eXpected Message Authentication Code used for data Integrity of signalling messages
XOR eXclusive OR
XPU AuXiliary Processing Unit
XRES Expected Response