129094039-gsm-radio-access-network-abbreviations-v1.pdf

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GSM Radio Access Network Abbreviations

ISSUE V1.0

Date 2009-3-6

Owner LiXi

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Abbreviations English

2G 2nd Generation Mobile Communications System 3G，3GMS 3rd Generation Mobile Communications System 3GPP 3rd Generation Partnership Project 8PSK 8 Phase Shift Keying A ABB Abis Bypass Board A/D Analog/Digital

AC Access Class Access Control Alternating Current

ACL Access Control List ACCH Associated Control Channel ACS Additional Reselection Parameters Indication ADM Add Drop Multiplexer AEC Acoustic Echo Cancellation AFP Automatic Frequency Planning AGCH Access Grant Channel AIS Alarm Indication Signal ALC Automatic Level Control ALM Alarm Board AMR Adaptive Multi-Rate ANR Automatic Noise Restrain APC Automatic Power Control APDU Application Protocol Data Unit API Application Program Interface APL Advanced Phase Lock APM Advanced Power Module APS Automatic Protection Switching ARFCN Absolute Radio Frequency Channel Number ASU Access network SDH transmission Unit ATM Asynchronous Transfer Mode ATT Attach-Detach allowed AUC Authentication Center AUTHR Authentication Response B BA BCCH Allocation BAM Back Administration Module BBU Baseband Control Unit BCC Base station Color Code BCCH Broadcast Control Channel BCD Binary-Coded Data BCF Base Station Control Function BCH Broadcast Channel BER Bit Error Ratio BESP BTS E1 Surge Protector

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BFD Bidirectional Forwarding Detection BFH Baseband Frequency Hopping BIE Base Station Interface Equipment BITS Building Integrated Timing Supply System BIU Base station Interface Unit BLER Block Error Rate BPU Baseband Processing Unit BS ID Base Station Identification BSBC Universal BBU Subrack Backplane type C(2U) BSC Base Station Controller BSIC Base transceiver Station Identity Code BSN Backward Sequence Number BSS Base Station Subsystem BSSAP Base Station Subsystem Application Part BSSGP Base Station Subsystem GPRS Protocol BSSMAP Base Station Subsystem Management Application Part BTS Base Transceiver Station BTSM BTS Management BVC BSSGP Virtual Connection C CA Cell Allocation CB Cell Broadcast CBA Cell Bar Access CBC Cell Broadcast Center CBCH Cell Broadcast Channel CBQ Cell Bar Qualify CBS Cell Broadcast System CBT Cell Broadcast Terminal CC Call Control CCB Call Control Block CCCH Common Control Channel CCS Common Channel Signaling CDU Combining and Distribution Unit CFU Call forwarding unconditional CHR Call History Record CIC Circuit Identity Code CM Connection Management CN Core Network COSC Crystal oscillator CP Connection management Protocol CPLD Complex Programmable Logical Device CPRI Common Protocol Radio Interface CQT Call Quality Test CR Connection Request CRC Cyclic Redundancy Code CRO Cell Reselect Offset CS Circuit Switching

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CT Call Transfer D D-BUS Data-BUS DBS Distribution Base Station DCDU Direct Current Distribution Unit DDF Digital Distribution Frame DiffServ Differentiated Service DL Downlink DLCI Data Link Connection Identifier DM Disconnected Mode DMCM The Main Control Module for DDRM BTS (DMCM) DOPRA Distributed Object-oriented Programmable Realtime Architecture DPC Destination signalling Point Code DRFU Double Radio Filter Unit DRX Discontinuous Reception DSCP Differentiated Services (DiffServ) Code Point DT Drive Test DTMF Dual-Tone Multi-frequency DTMU Transmission/Timing/Management Unit for DTRU BTS DTP Coverage Prediction by DT Data DTX Discontinuous Transmission DXC Digital Cross-connect equipment D-BUS Data-BUS DBS Distribution Base Station DCDU Direct Current Distribution Unit DDF Digital Distribution Frame DiffServ Differentiated Service DL Downlink DLCI Data Link Connection Identifier DM Disconnected Mode DMCM The Main Control Module for DDRM BTS (DMCM) DOPRA Distributed Object-oriented Programmable Realtime Architecture DPC Destination signalling Point Code DRFU Double Radio Filter Unit DRX Discontinuous Reception DSCP Differentiated Services (DiffServ) Code Point DT Drive Test DTMF Dual-Tone Multi-frequency DTMU Transmission/Timing/Management Unit for DTRU BTS DTP Coverage Prediction by DT Data DTX Discontinuous Transmission DXC Digital Cross-connect equipment E ECSC Early Classmark Sending Control EDGE Enhanced Data Rate for GSM Evolution EDU Enhanced Duplexer Unit EFR Enhance Full Rate speech codec

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EIR Equipment Identity Register EMC ElectroMagnetic Compatibility EMI External Machine Interface EMI filter Electromagnetic interface filter eMLPP enhanced Multi-Level Precedence and Pre-emption service EMS Element Management System EMU Environment Monitoring Unit EPLD Erasable Programmable Logic Device ESL Extend Signalling Link ETSI European Telecommunications Standards Institute F FABS Flexible Abis FACCH Fast Associated Control Channel FAI First Article Inspection FCCH Frequency Correction Channel FDD Frequency Division Duplex FDMA Frequency Division Multiple Access FE Fast Ethernet port FER Frame Error Rate FFT Fast Fourier Transform Algorithm FH Frequency Hopping FH-BUS Frequency Hopping Bus FMUA Fan Environment Monitor FN Frame Number FR Frame Relay FS Force Switch FSN Forward Sequence Number FTP File Transfer Protocol FUC Frame Unit Controller G GATM GSM Antenna and TMA Control module GBAM GSM Back Administration Module GBCR GSM BSC Control Processing Rack GBIU Gb Interface Processing Unit GBSR GSM BSC Service Processing Rack GDPUC GSM Data Processing Unit for CS service GE Gigabit Ethernet GEHUB GSM E1/T1 High level Data Link Control Unit for aBis GEIUA GSM E1/T1 Interface Unit for A GEIUB GSM E1/T1 Interface Unit for aBis GEIUP GSM E1/T1 Interface Unit for Pb GEIUT GSM E1/T1 Interface Unit for aTer GEPS GSM Extended Processing Subrack GEPUG GSM E1/T1 Packet Unit for Gb GERAN GSM/EDGE Radio Access Network GEXUB GSM E1/T1 interface eXtensible Unit for aBis GFGUA GSM Fast ethernet and Gigabit ethernet Unit for A

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GFGUB GSM Fast ethernet and Gigabit ethernet Unit for aBis GFGUG GSM Fast ethernet and Gigabit ethernet Unit for Gb GGCU GSM General Clock Unit GLONASS GLObal NAvigation Satellite System GMPS GSM Main Processing Subrack GMSC Gateway Mobile-services Switching Centre GMSK Gaussian Minimum Shift-frequency Keying GOGUA GSM Optic Gigabit ethernet Unit for A GOGUB GSM Optic Gigabit ethernet Unit for aBis GOIUA GSM Optic Interface Unit for A GOIUB GSM Optic Interface Unit for aBis GOIUP GSM Optic Interface Unit for Pb GOIUT GSM Optic Interface Unit for aTer GOMU GSM Operation and Maintenance Unit GOPT Local Optical Interface Board GoS Grade of Service GOXUB GSM Optic interface eXtensible Unit for aBis GPRS General Packet Radio Service GPS Global Position System GSCU GSM Switching and Control Unit GSM Global System for Mobile communications GT Global Title GTCS GSM TransCoder Subrack GTMU GSM Transmission and Timing and Management Unit for BBU GTNU GSM TDM switching Network Unit GXPUI GSM eXtensible Processing Unit for Computation service GXPUM GSM eXtensible Processing Unit for Main service GXPUT GSM eXtensible Processing Unit for Transmission H HCS Hierarchical Cell Structure HDLC High level Data Link Control HDSL High speed Digital Subscriber Line HLR Home Location Register HSCSD High Speed Circuit Switched Data HSN Hopping Sequence Number Hub BTS Hub Base Transceiver Station HW High Way I IASU Isite Access SDH Unit IBBS Integrated Backup Battery System ICC Interference Rejection Combining ID Identification/Identity IE Information Element IEC International Electrotechnical Commission IFFT Inverse Fast Fourier Transform Algorithm IMEI International Mobile Equipment Identity IMSI International Mobile Subscriber Identity

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IP Internet Protocol IP PM IP Performance Monitor ISDN Integrated Services Digital Network ISUP Integrated Services Digital Network User Part/ISDN User Part ITU International Telecommunications Union ITU-T International Telecommunication Union - Telecommunication Standardization

Sector K kbps kilo-bits per second L L1 Layer 1 (physical layer) L2ML Layer 2 Management Link LA Location Area LAC Location Area Code LAI Location Area Identity LAPB Link Access Procedure Balanced LAPD Link Access Protocol on the D channel LAPDm Link Access Protocol on the Dm channel LBS Location Based Service LCS Location Service LDR Load Reshuffling LEML Local Element Management Layer LFE Longest Consecutive Frame Error LI Length Indicator LNA Low Noise Amplifier LOF Loss Of Frame LOS Loss Of Signal LPN7 Common Channel Signaling Processing Board LSA Link State Advertisement LSB Least Significant Bit LVDS Low Voltage Differential Signal M MA Mobile Allocation MACS Maximum number of AMR Codec ModeS MAIO Mobile Allocation Index Offset MAP Mobile Application Part MBR Multiband Report MCC Mobile Country Code MCK Main Clock board MCU Main Control Unit MDC Message Discrimination MDMC Distribution Monitor and Communication board MDT Message Distribution ME Mobile Equipment MGW Media Gateway MM Mobility Management MMCC Mobility Management Call Control

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MMI Man Machine Interface MML Man-Machine Language MMSMS Mobility Management Short Message Service MMSS Mobility Management Supplement Service MNC Mobile Network Code MNS Mobile Network Signaling MOC Mobile Originated Call MOS Mean Opinion Scores MPM Multiuser Project Manager MR Measurement Report MRP Multiple Reuse Pattern MRT Message Routing MS Mobile Station MS-AIS Multiplex Section Alarm Indication signal MSB Most Significant Bit MSC Mobile Switching Center MSISDN Mobile Station International ISDN Number MSP Multiplex Section Protection MSU Message Signaling Unit MT Maintenance and Test console MTBF Mean Time Between Failures MTP Message Transfer Part N NA No Acknowledgment NACC Network Assisted Cell Change NACK Negative ACKnowledgement NAS Non Access Stratum NC2 Network Control Mode 2 NCC Network Color Code NECI New Establishment Causes Indication NEL Network Element Layer NML Network Management Layer NRI Network Resource Identifier NS Network System NSS Network Subsystem O ODF Optical Distribution Frame OMC Operation and Maintenance Center OML Operation Maintenance Link OMU Operation and Maintenance Unit OSI Open System Interconnection OSS Operating Support System ODF Optical Distribution Frame OMC Operation and Maintenance Center OML Operation Maintenance Link OMU Operation and Maintenance Unit OSI Open System Interconnection

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OSS Operating Support System P PACCH Packet Associated Control Channel PARC Platform of Advanced Radio Controller PBCCH Packet Broadcast Control Channel PBGT Power Budget PBSL PCU-BSC Interface Signaling Link PBT Power Boost Technology PBU Power Boost Unit PCCCH Packet Common Control Channel PCH Paging Channel PCI Preemption Capability Indicator PCIC Packet Circuit Identity Code PCU Packet Control Unit PDCH Packet Data Channel PDF Power Distribution Frame PDH Pleisochronous Digital Hierarchy PDP Packet Data Protocol PDU Power Distribution Unit PFCB Fan Control Board PFCU Fan Control Unit PFPU Fan Power Unit PGND Protection Ground PH Physical (layer) PHB Per-Hop Behavior PIE Priority Information Element PIN Personal Identity Number PLMN PLMN Public Land Mobile Network PoC Push-to-talk over Cellular PPP point-to-point protocol PQ Priority Queue PREC Preemption Recommendation PS Packet Switched PSTN Public Switched Telephone Network PSU Power Supply Unit PTCCH packet timing advanced control channel PVI Preemption Vulnerability Indicator PWM Pulse-Width Modulation Q QA Queuing Allowed indicator QoS Quality of Service QRI Queuing Recommendation Indicator R RACH Random Access Channel RAN Radio Access Network RCU Remote Control Unit RF Radio Frequency

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RF PLL RF Phase-Lock Loop RH Relative Humidity RLC Radio Link Control RLM Radio Link Management RNC Radio Network Controller RND Radio Network Dimension RQI Radio Quality Indication RR Reverse Request RRM Radio Resource Management RRU Remote Radio Unit RSCP Received Signal Code Power RSL Radio Signaling Link RTP Real-time Transfer Protocol RUS Remote Upgrade Service RX Reception RXLEV Received signal level RXQUAL Received signal Quality S SBT Smart Bias-Tee SCCP Signaling Connection Control Part SCH Synchronization Channel SCP Service Control Point SCTP Streaming Control Transmission Protocol SD Signal Degrade SDCCH Stand-alone Dedicated Control Channel SDH Synchronous Digital Hierarchy SF Signal Fail SFH Synthesized Frequency Hopping SFP Small Form-Factor Pluggable SGSN Serving GPRS Support Node SHO Soft Handoff SI System Information SIGTRAN Signaling Transport SIM Subscriber Identity Module SLC Signaling Link Code SMS Short Message Service SMSC Short Message Service Centre SMU Service Management Unit SNR Signal Noise Ratio SONET Synchronous Optical Network SPC Signaling Point Code SPU Signaling Processing Unit SS Supplementary Service STM-1 Synchronous Transport Module STP Signaling Transfer Point SWM SoftWare Management T

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TA Timing Advance TBF Temporary Block Flow TBUS Time BUS TC Transcoder TCH Traffic Channel TCP Transfer Control Protocol TCU Temperature Control Unit TDM Time Division Multiplex TDMA Time Division Multiple Access TEI Terminal Equipment Identifier TFO Tandem Free Operation TM Terminal Multiplexer TMA Tower Mount Amplifier TMN Telecommunication Management Network TMSI Temporary Mobile Subscriber Identifier TPS Tributary Protect Switch TRA TCH Rate Adjust TRAU Transcoding and Rate Adaptation Unit TSC Training Sequence Code TX Transmit U UAP United Analysis and Precision Check UBFA Universal BBU Fan unit type A(2U) UDP user datagram protocol UEIU Universal Environment Interface Unit UELP Universal E1/T1 Lighting Protection unit UFLP Universal FE/GE Lighting Protection unit UL Uplink UMTS Universal Mobile Telecommunications System UPEU Universal Power and Environment interface unit(-48V) USB Universal Serial Bus V VC Trunk Virtual Container Trunk VLR Visitor Location Register VQI Voice Quality Index VRRP Virtual Router Redundancy Protocol VSAT Very satellite communications terminal VSWR Voltage Standing Wave Ratio W WOPB Overvoltage Protection Board WRED Weighted Random Early Detection WRR Weighted Round Robin WS Work Station WTR Wait To Restore

129094039-gsm-radio-access-network-abbreviations-v1.pdf

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