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Abis GSM interface standard defining attributes of the communication between BSC and BTS.
GSM ½Ó¿Ú±ê×¼£º¶¨ÒåBSCÓëBTSÖ®¼äµÄͨѶÊôÐÔ
AC Alternating Current ½»Á÷µç
ACB Alarm Collection Board ¸æ¾¯ÊÕ¼¯°å
ACCH Associated Control Channel Ïà¹Ø¿ØÖÆÐŵÀ
ACCU Alternating Current Connection Unit ½»Á÷µç½ÓÏßµ¥Ôª
A/Dconverter Analog to Digital converter Ä£Êýת»»Æ÷
AGCH Access Grant Channel ½ÓÈë×¼ÐíÐŵÀ
Air conditioner (Active cooler) One version of the climate unit.£¨ÓÐÔ´ÀäÈ´Æ÷£©¿Õµ÷É豸
AIS Alarm Indication Signal ¸æ¾¯Ö¸Ê¾ÐźÅ
ALNA Antenna Low Noise Amplifier ÌìÏßµÍÔë·Å´óÆ÷
AM Application Module Ó¦ÓÃÄ£¿é
AMPS Advanced Mobile Phonesystem ¸ß¼¶Òƶ¯µç»°ÏµÍ³
Antenna Diversity ÌìÏß·Ö¼«½ÓÊÕ
Adaptive Equalizatio ÊÊÓ¦ÐÔ¾ùºâ
AO Application Object Ó¦ÓöÔÏó
Aoc Advice Of Charge ¼Æ·Ñ֪ͨ
APSI Application Platform Services Interface Ó¦ÓÃƽ̨ҵÎñ½Ó¿Ú
ARAE Antenna Related Auxiliary Equipment ÌìÏßÏà¹Ø¸¨ÖúÉ豸
Architecture Ìåϵ½á¹¹
ARFCN Absolute Radio Frequency Channel Number ¾ø¶ÔÎÞÏßµçƵÂÊÐŵÀÊý
ARU Active Replaceable Unit ÓÐÔ´¿ÉÌæ»»µ¥Ôª
ASIC Application Specific Integrated Circuit Ìض¨ÓÃ;¼¯³Éµç·
Astra ASIC in the TRU TRUÖеÄÒ»ÖÖÌض¨ÓÃ;¼¯³Éµç·
AT Alphanumeric Terminal ÎÄ×ÖÊý×ÖÖÕ¶Ë
AUC Authentication Center ¼øȨÖÐÐÄ
Bat Battery µç³Ø
BB Battery Box µç³Ø£¨×飩Ïä
BBS Battery Backup Stand µç³Ø±¸·Ý¼Ü
BCC BTS Color Code BTSÉ«Âë
BCH Broadcast Channel ¹ã²¥ÐŵÀ
BCCH Broadcast Control Channel ¹ã²¥¿ØÖÆÐŵÀ
Downlink only broadcast channel for broadcast of general information at a base station, on a base station basis.
BDM Battery Distribution Module µç³Ø·ÖÅäÄ£¿é
The BDM is an IDM with a battery and a local processor.
BER Bit Error Rate ±ÈÌØÎó²îÂÊ
BFU Battery Fuse Unit µç³Ø±£ÏÕµ¥Ôª
BHCA Busy Hour Call Attempt æʱÊÔºô´ÎÊý
BGW Billing Gateway ¼Æ·Ñ¹Ø¿Ú
Bm Denotes a full rate traffic channel ָʾһ¸öÈ«ËÙÂÊ»°ÎñÐŵÀ
BPC Basic Physical Channel »ù´¡ÎïÀíÐŵÀ
Denotes the air interface transport vehicle formed by repetition of one time slot on one or more radio frequency channels.
BS Base Station »ùÕ¾
BSC Base Station Controller »ùÕ¾¿ØÖÆÆ÷
GSM network node for control of one or more BTSs.
BSCSim Base Station Controller Simulator »ùÕ¾¿ØÖÆÆ÷Ä£ÄâÆ÷
BSIC Base Station Identity Code »ùÕ¾Éí·ÝÂë
BSS Base Station SubSystem »ùÕ¾×Óϵͳ
GSM network logical unit comprising one BSC and one or more BTSs.
BTS Base Transceiver Station »ùÕ¾ÊÕ·¢ÐĄ̊
GSM network unit operating on a set of radio frequency channels in one cell. Burst A portion of digital information, the physical content, that is transferred within the time interval of one time slot.
Burst Âö³å A portion of digital information, the physical content, that is transferred within the time interval of one time slot.
Êý×ÖÐÅÏ¢µÄÒ»²¿·Ö£¬ÔÚÒ»¸öʱ϶µÄʱ¼ä¼ä¸ô´«ÊäÎïÀíÄÚÈÝ
Busy Mode æģʽ
Cabinet The physical housing of a base station. Ò»¸ö»ùÕ¾µÄÎïÀí»ú¼Ü
CBCH Cell Broadcast Channel СÇø¹ã²¥ÐŵÀ
This is a downlink only channel used by the GSM defined SMSCB function.
CC Country Code ¹ú¼Ò´úÂë
CCCH Common Control Channel ¹«¹²¿ØÖÆÐŵÀ
Channel combining the following common control channels:
PCH Paging Channel RACH Random Access Channel AGCH Access Grant Channel
CCITT International Telephone and Telegraph Consultative Committee ¹ú¼Êµç»°Óëµç±¨¹ËÎÊίԱ»á
CCU Climate Control Unit Æøºò¿ØÖƵ¥Ôª
CCS Common Channel Signaling Subsystem ¹²Â·ÐÅÁî×Óϵͳ
CDMA Code Division Multiple Access Âë·Ö¶à·½ÓÈë
CDR Charging Data Recording ¼Æ·ÑÊý¾Ý¼Ç¼ Call Data Record ºô½ÐÊý¾Ý¼Ç¼
CDU Combining and Distribution Unit ºÏ³É·ÖƵµ¥Ôª
CE Conformite¡ä Europe¡äenne
Cell СÇø An area of radio coverage identified by the GSM network by means of the cell identity.
CF Central Functions Ö÷º¯Êý
Channel The common term channel denotes the virtual connection, consisting of physical and logical channels between BSS and MS, during a call in progress. -> Logical Channel -> Physical Channel
CFB Call Forwarding On Mobile Subscriber Busy Óöæºôת
CFU Call Forwarding Unconditional ÎÞÌõ¼þºôת
Channel Coding ÐŵÀ±àÂë
Channel Combination A physical channel on an air interface carries a defined set of logical channels.
ÔÚ¿ÕÆøÖÐЯ´øÒ»×鶨ÒåÁËÂß¼ÐŵÀµÄÎïÀíÐŵÀ
Channel Decoder ÐŵÀ½âÂëÆ÷
Channel group A channel group is a group of dedicated logical channels to a specific MS.
Ò»ÐŵÀ×éÊÇÊÖ»úרÓõÄÒ»×éÂß¼ÐŵÀ
CHS Charging Subsystem ¼Æ·Ñ×Óϵͳ
CGI Cell Global Identity СÇøÈ«Çòʶ±ðÂë
Ciphering ¼ÓÃÜ
CLM Clock Modules ʱÖÓÄ£¿é
CMD Digital Radio Communication Tester Êý×ÖʽÎÞÏßµçͨѶ²âÊÔÆ÷
CME 20 Cellular Mobile Europe Ericsson GSM system Å·ÖÞ°®Á¢ÐÅGSM·äÎÑÒƶ¯Í¨Ñ¶ÏµÍ³
CME 20 Ericsson digital land mobile telecommunication system based on the GSM standards.
CME 201 Ericsson GSM system comprising Ericsson equipment only.
CMRU Central Main Replaceable Unit. Main RU. The RBS is physically connected to the Base Station Controller (BSC) via the CMRU. There is only one CMRU in each RBS. ÖÐÑëÖ÷Ìæ»»µ¥Ôª
CMS 40 Cellular Mobile System Ericsson digital land mobile telecommunication system based on the Joint Technical Committee (JTC)
specification for PCS 1900.
Compr Compressor ѹËõ»ú
CON LAPD concentrator DÐŵÀÁ´Â·½ÓÈë³ÌÐò¼¯ÖÐÆ÷
LAPD concentration is used to reduce the number of required physical links between the BSC and BTS.
DÐŵÀÁ´Â·½ÓÈë³ÌÐò¼¯ÖÐÆ÷ ÓÃÀ´¼õÉÙBSCÓëBTSÖ®¼äµÄÎïÀíÁ´½Ó
Config Configuration ÅäÖÃ
Co-siting Co-siting is to operate the radio base station in GSM together with the radio base station in Total Access Communication
System (TACS) or Nordic Mobile Telephone system (NMT) on the same site by sharing common equipment.
CPU Central Processing Unit ÖÐÑë´¦ÀíÆ÷
CSA Canadian Standards Association ¼ÓÄôó±ê׼лá
CSES Consecutive Severely Errored Second
CSU Channel Service Unit ÐŵÀ·þÎñµ¥Ôª
CU Combining Unit (RU in CDU_D) ºÏ³ÉÆ÷
CUG Closed User Group ±ÕºÏÓû§×é
CW Call Waiting ºô½ÐµÈ´ý
DA Digital Analysis ºÅÂë·ÖÎö
Dannie ASIC in the TRU
DB DataBase Êý¾Ý¿â
DC Direct Current Ö±Á÷µç
DCC Digital Cross Connector Êý×Öʽʮ×ÖÐÎÁ¬½ÓÆ÷
DCCH Dedicated Control Channel רÓÿØÖÆÐŵÀ
Dedicated control channels carry signalling data. רÓÿØÖÆÐŵÀЯ´øÐźÅÊý¾Ý
DCE Data Communication Entity Êý¾ÝͨÐÅʵÌå
DCS Digital Communication System International standard for 1800 MHz based on the GSM standard.
Êý¾ÝͨÐÅ×Óϵͳ¡£Îª1800MHzGSMÖƶ¨µÄÊý×ÖͨѶϵͳ¹ú¼Ê±ê×¼
DDTMA Dual Duplexer Tower Mounted Amplifier This type needs only one combined TX/RX feeder from the BTS to the TMA.
¨C>DTMA ¨C>RTMA ¨C>TMA ¨C>BTS
DIP DIgital Path Êý×ÖͨµÀ
The name of the function used for supervision of the connected PCM lines.
Dixie ASIC in the TRU
DM Degraded Minute Ͻµ±ßÔµ
DMRU Distributed Main Replaceable Unit. ·Ö²¼Ê½Ö÷Ìæ»»µ¥Ôª
If a Main RU is subordinated to the CMRU, it is said to be distributed.
Downlink Signalling direction, from the system to the MS. ÐźŴ«ÊäµÄ·½Ïò£¬´Óϵͳµ½ÊÖ»ú
DP Digital Path Êý×Ö·¾¶
DPX Duplexer Ë«¹¤Æ÷
DS1 Digital Signal level 1 (1544 kbit/s) Êý×ÖÐźŲã1
DSP Digital Signal Processor Êý×ÖÐźŴ¦ÀíÆ÷
DT Data Transcript Êý¾Ý¸±±¾
DTE Data Terminal Entity Êý¾ÝÖÕ¶ËʵÌå
DTMA Duplex TMA Ë«¹¤Ëþ·Å
DTMA is similar to the old ALNA except for different characteristics. ¨C>DDTMA ¨C>RTMA ¨C>TMA
DU Distribution Unit (RU in CDU_D) ·ÖƵÆ÷
Duplex Distance Ë«¹¤¼ä¾à
DX Direct Exchange Ö±½Ó½»»»
DXU Distribution Switch Unit ÐźŷÖÅäת»»µ¥Ôª
DXX Ericsson Cellular Transmission System including NMS °®Á¢ÐÅ·äÎÑ´«Êäϵͳ
E1 Short for G.703 2048 kbit/s PCM link
E-GSM Extended GSM À©Õ¹GSM
EACU External Alarm Connection Unit Íⲿ¸æ¾¯Á¬½Óµ¥Ôª
ECU Energy Control Unit ÄÜÔ´¿ØÖƵ¥Ôª
ECPOOL »ØÉùÒÖÖÆÆ÷³Ø
EC1 External Condition Map Class 1 1¼¶ÍⲿÌõ¼þ
EC2 External Condition Map Class 2 2¼¶ÍⲿÌõ¼þ
EEPROM Electrically Erasable Programmable Read-Only Memory µç¿É²Á³ýÖ»¶Á´æ´¢Æ÷
EFR Speech Coder Enhanced Full Rate Speech Coder ÔöÇ¿ÐÍÈ«ËÙÂÊ»°Òô±àÂëÆ÷
EIR Equipment Identity Register É豸¼ø±ð¼Ä´æÆ÷
EM Extension Modules À©Õ¹Ä£¿é
EMC Electro Magnetic Compatibility µç´Å¼æÈÝÐÔ
EMF ElectroMotive Force µç¶¯ÊÆ
ENV Environmental »·¾³
ES Errored Second Îó²îƬ
ESB External Synchronization Bus Íâͬ²½×ÜÏß
ESD ElectroStatic Discharge ·Åµç
ESO Ericsson Support Office °®Á¢ÐÅÖ§³Ö°ìÊ´¦
ETC Exchange Terminal Circuit ½»»»»úÖն˵ç·
ETSI Å·ÖÞµçÐűê׼лá
EXT External Íⲿ
FACCH Fast Associated Control Channel ¿ìËÙÏà¹Ø¿ØÖÆÐŵÀ
Main signalling channel in association with a TCH.
Fading Dip Ë¥Â䲨¹È
FCC Federal Communications Commission ÃÀ¹úͨÐÅίԱ»á
FCCH Frequency Correction Channel ƵÂÊУÕýÐŵÀ
FCOMB Filter COMBiner Â˲¨ºÏ³ÉÆ÷
FCS Frame Check Sequence ֡УÑéÐòÁÐ
FCU Fan Control Unit ·çÉÈ¿ØÖÆÆ÷
FDL Facility Data Link ¼òÒ×Êý¾ÝÁ´Â·
FDMA Frequency Division Multiple Access Ƶ·Ö¶à·½ÓÈë
FER Frame Erasure Ratio µôÖ¡ÂÊ
FIU Fan Interface Unit ·çÉȽӿڵ¥Ôª
FMS File Management Subsystem Îļþ¹ÜÀí×Óϵͳ
Frequency Hopping ÌøƵ
FS Function Specification ¹¦ÄÜ˵Ã÷
FSC Field Support Centre ´Å³¡¼¤ÀøÖ§³ÖÖÐÐÄ
FU Filter Unit (RU in CDU_D) Â˲¨Æ÷
Fud Filter Unit with duplexer (RU in CDU_D) Ë«¹¤Â˲¨Æ÷
FXU Future Expansion Unit Ô¤ÁôÀ©Õ¹µ¥Ôª
G01 MO model for RBS 200.
G12 MO model for RBS 2000.
GMSK Gaussian Minimum Shift Keying ¸ß˹×îСƵÒƼü¿Ø
GPS Global Position System È«Çò¶¨Î»ÏµÍ³
GSM Global System for Mobile communications International standard for a TDMA digital mobile communication system. Originally, GSM was an abbreviation for Group Special Mobile, which is a European mobile lecommunication interest group, established in 1982. È«ÇòÒƶ¯Í¨ÐÅϵͳ
GSS Group Switching Subsystem Ⱥ½»»»×Óϵͳ
GUI Graphical User Interface ͼÐÎÓû§½çÃæ
HCOMB Hybrid COMBiner »ìºÏºÏ³ÉÆ÷
HDLC High level Data Link Control ¸ß¼¶Êý¾ÝÁ´Â·¿ØÖÆ
HDSL High bit rate Digital Subscriber Line ¸ßËÙÂÊÊý×ÖÓû§Ïß·
Heat Exchanger One version of the climate unit É¢ÈÈÆ÷
HEU Heat Exchanger Unit ÈȽ»»»Æ÷
HLIN High Level IN ¸ßµçƽÊäÈë
HLOUT High Level OUT ¸ßµçƽÊä³ö
HLR HOME LOCATION REGISTER ¹éÊôλÖüĴæÆ÷
HMS Heat Management System ÈȹÜÀíϵͳ
HSN Hopping Sequence Number ÌøƵÐòÁкÅ
Hum Humidity ÎÂʪ¶È
HW Hardware Ó²¼þ
HWU Hardware Unit Ó²¼þµ¥Ôª
An HWU consists of one or more SEs. An HWU is a functional unit within the RBS. The HWU is either active (equipped with a processor) or passive (without processor).
IC Integrated Circuit ¼¯³Éµç·
ID Identification Éí·Ýʶ±ð
IDB Installation DataBase °²×°Êý¾Ý¿â
IDM Internal Distribution Module ÄÚ²¿·ÖÅäÄ£¿é
IEC International Electric Commission ¹ú¼Êµç¹¤Î¯Ô±»á
IMEI International Mobile Station Equipment Identity ¹ú¼ÊÒƶ¯Ì¨É豸ʶ±ðÂë
IMSI International Mobile Subscriber Identity ¹ú¼ÊÒƶ¯Óû§Éí·Ýʶ±ðÂë
IN Intelligent Networks ÖÇÄÜÍø
INIT Initial Ê×д×Öĸ
INT Internal ÄÚ²¿
I/O Input/Output (I/O) System ÊäÈë/Êä³öϵͳ
IR InfraRed ºìÍâÏß
IS Interface Switch ½Ó¿Ú¿ª¹Ø
ISDN Integrated Services Digital Network, ×ۺϷþÎñÊý×ÖÍø
ISP Internet·þÎñÌṩÕß
IWD InterWork Description ½»»¥ÊôÐÔ
IWF Interworking Function ½»»¥¹¤×÷¹¦ÄÜ
I1A Internal Fault Map Class 1A 1A¼¶ÄÚ²¿¹ÊÕÏ
I1B Internal Fault Map Class 1B 1B¼¶ÄÚ²¿¹ÊÕÏ
I2A Internal Fault Map Class 2A 2A¼¶ÄÚ²¿¹ÊÕÏ
JTC Joint Technical Committee ÁªºÏ¼¼ÊõίԱ»á
Kc Communication Key ͨÐÅÃÜÔ¿
Ki Identity Key Éí·ÝÃÜÔ¿
LA Location Area λÖÃÇø
LAC Location Area Code λÖÃÇø´úÂë
LAI Location Area Identity λÖÃÇø±àºÅ
LAPD Link Access Procedures on D-channel D ÐŵÀÁ´Â·½ÓÈë³ÌÐò
LAPD is the data link layer (layer 2) protocol used for communication between the BSC and the BTS on the Abis interface.
Abis layer 2 is sometimes used synonymously with LAPD.
LBO Line Build Out ÏßÔöÒæ
LED Light Emitting Diode ·¢¹â¶þ¼«¹Ü
LLB Line Loop Back »·Ïß±³°å
LNA Low Noise Amplifier µÍÔë·Å´óÆ÷
Local bus The local bus offers communication ÔÚDXUºÍTRUECUÖ®¼äÌṩͨѶµÄ¾ÖÓò×ÜÏß
between a central main RU (DXU) and distributed main RUs (TRU and ECU).
Local mode When the RU is in RU mode Local it is not prepared for BSC communication. ±¾µØģʽ
Local/Remote switch Using the Local/Remote switch, an operator orders the RU to enter Local or Remote mode. ±¾µØ/Ô¶¶Ë¿ª¹Ø
Logical Channel A logical channel represents a specified portion of the information carrying capacity of a physical channel.
GSM defines two major categories of logical channels: TCHs Traffic CHannels, for speech or user data CCHs Control CHannels, for control signalling. -> Physical Channel -> Channel Combination
Logical RU A unit which can be referred to, but is not a single physical unit. There are three different kinds of logical RUs:
1. Buses 2. Antennas 3. Environment
LOF Loss Of Frame Ö¡ËðºÄ
LOS Loss Of Signal ÐźÅËðºÄ
LS Linkset Á´Â·¼¯
Magazine A magazine is a reserved space in the cabinet, which may hold one or more RUs.
Main RU A main replaceable unit is a replaceable unit that contains one or more processors, to which software can be downloaded from the BSC.
MAP Mobile Application Part Òƶ¯Ó¦Óò¿·Ö
Mapping Ó³Éä
MAS Maintenance Subsystem ά»¤×Óϵͳ
MCC Mobile Country Code ¹ú¼ÒÒƶ¯´úÂë
MCS Man-Machine Communication Subsystem ÈË»úͨÐÅ×Óϵͳ
MHS Modification Handling System Ericsson trouble report database ÐÞÕý´¦Àíϵͳ °®Á¢ÐŹÊÕϱ¨¸æÊý¾Ý¿â
MIN Mobile IN Òƶ¯ÖÇÄÜÍø
MMI Man-Machine Interface ÈË»ú½çÃæ
MO Managed Object ¹ÜÀí¶ÔÏó
MS Mobile Station Òƶ¯Ì¨
MSC Mobile services Switching Centre Òƶ¯·þÎñ½»»»ÖÐÐÄ
GSM network unit for switching, routing and controlling calls to and from the Public Switched Telephone Network (PSTN) and other networks.
MSIN Mobile Subscriber Identification Number Òƶ¯Óû§Ê¶±ðºÅ
MSISDN Mobile Subscriber ISDN Number Òƶ¯Óû§ISDNºÅ
MSRN Mobile Station Roaming Number Òƶ¯Ì¨ÂþÓκÅ
MSTP Mobile Station Test Point Òƶ¯Ì¨²âÊÔµã
MTP Message Transfer Part ÏûÏ¢´«ËͲ¿·Ö
Multidrop Two or more RBSs are connected in a chain to the same transmission system. Á½¸ö»ò¸ü¶àµÄ»ùÕ¾±»Á¬½Óµ½Í¬Ò»Ìõ´«ÊäϵͳÉÏ
All the relevant timeslots are dropped out by each RBS. (This function is sometime called cascading.)
Multipath Fading ¶à¾¶Ë¥Âä
NAS Network Access Server ½ÓÈë·þÎñÆ÷
NDC National Destination Code ¹úÄÚÄ¿µÄÂë
NMC Network Management Center ÍøÂç¹ÜÀíÖÐÐÄ
NMS Ericsson Network Management System in DXX ÔÚDXXÖеİ®Á¢ÐÅÍø¹Üϵͳ
Nominal Power The nominal power is the power level defined when configuring the transceiver. ±ê³Æ¹¦ÂÊ
±ê³Æ¹¦ÂÊÊǵ±ÅäÖÃÊÕ·¢Æ÷ʱ¶¨ÒåµÄ¹¦Âʵçƽ
NS Network Synchronization Íøͬ²½
NSS Network&Switching Subsystem ÍøÂçºÍ½»»»×Óϵͳ
N terminal Neutral terminal in a AC mains connection. ÔÚ½»Á÷¸ÉÏß½ÓÏßÖеÄÁãÏߣ¨ÖÐÐÔ½ÓÏ߶ˣ©
O&M Operation and Maintenance ²Ù×÷ºÍά»¤
General term for activities such as configuration, utilization of channels (frequency bands), cell planning, stemsupervision, hardware and software maintenance, subscriber administration,etc.
OMC Operation and Maintenance Centre ²Ù×÷ºÍά»¤ÖÐÐÄ
OML Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on Abis.
²Ù×÷ºÍά»¤Á¬½Ó²ã2
OMS Operation And Maintenance Subsystem ²Ù×÷ºÍά»¤×Óϵͳ
OMT Operation and Maintenance Terminal ²Ù×÷ºÍά»¤ÖÕ¶Ë
The OMT is a terminal that supports functions for handling the RBS on site. The terminal can be a portable PC.
Operation Operation is the normal, everyday running of the RBS with full functionality. ÔËתÕý³££¬ÈÕ³£»ùÕ¾ÔËÐÐËùÓеĺ¯Êý
OPI OPerational Instructions ²Ù×÷ÊÖ²á
OSI Open System Interconnection ¿ª·Åϵͳ»¥Á¬
OSS Operation Maintenance Support System ÔËÐÐά»¤Ö§³Öϵͳ
PAGCH Paging And Access Grant Channel Ñ°ºôºÍ½ÓÈë×¼ÐíÐŵÀ
Paging Message Ñ°ºôÏûÏ¢
P-GSM Primary GSM
Passive RU A passive replaceable unit has a very low level of intelligence and is independent of the processor system.
Path Loss ·¾¶ËðºÄ
PCH Paging CHannel
Downlink only subchannel of CCCH for system paging of MSs. -> CCCH
PCM Pulse Code Modulation Âö³åµ÷ÖƱàÂë
PCS Personal Communication Services ¸öÈËͨÐÅ·þÎñ
PCU Packet Control Unit ÐÅÏ¢°ü¿ØÖƵ¥Ôª
PE terminal Protective Earth terminal in a AC mains connection. ÔÚ½»Á÷Ö÷¸ÉÏßÖеı£»¤µØ½ÓÏ߶Ë
PFWD Power Forward Ç°Ïò¹¦ÂÊ
Physical Channel ÎïÀíÐŵÀ An air interface physical channel carries one or more logical channels. A physical channel uses a combination of frequency and time division multiplexing and is defined as a sequence of radio frequency channels and time slots.
-> TDMA frame -> Logical channel
PIN Personal Identification Number ¸öÈËÉí·ÝºÅÂë
PLB Payload Loop Back ÓÐЧ¸ºÔØ»·Â·°å
PLMN Public Land Mobile Network ¹«ÖÚ½µØÒƶ¯Íø
A network, established and operated by an administration or its licensed operator(s), for the specific purpose of providing land mobile communication services to the public. It provides communication possibilities for mobile users. For comunication between mobile and fixed users, interworking with a fixed network is necessary.
Plug-In ²å¼þ³ÌÐò/¿É²ðжµÄ
PPE Personal Protective Equipment רÓñ£»¤É豸
PREFL Power Reflected ·´Ïò¹¦ÂÊ
Protocol ÐÒé
PSTN (Public Switched Telephone Network ¹«¹²¿ª¹Øµç»°ÍøÂç
PSU Power Supply Unit µçÔ´µ¥Ôª
PUK PIN½âËøÂë
PWU Power Unit µçÔ´µ¥Ôª
RA Route Analysis ·ÓÉ·ÖÎö
Rate Adaptation(RA) ËÙÂÊÊÊÅä
RACH Random Access Channel Ëæ»ú½ÓÈëÐŵÀ
Uplink only subchannel of CCCH for MS request for allocation of a dedicated channel. -> CCCH
RAI Remote Alarm Indication Ô¶¶Ë¸æ¾¯Ö¸Ê¾
RAM Random Access Memory Ëæ»ú´æ´¢Æ÷
Rayleigh Fading ÈðÀûË¥Âä
RBER Radio Bit Error Ratio ÎÞÏß±ÈÌØÎó²îÂÊ
RBS Radio Base Station ÎÞÏß»ùÕ¾
All equipment forming one or more Ericsson base stations. ->BTS
RE Register Function¼Ä´æÆ÷¹¦ÄÜ
Remote mode When the RU is in RU mode Remote, a link is established between the BCS and the central main RU.Ô¶¶Ëģʽ
RF Radio Frequency ÉäƵ
RFCH Radio Frequency Channel ÉäƵÐŵÀ A radio frequency carrier with its associated bandwidth.
RFTL Radio Frequency Test Loop ÉäƵ²âÊԻط
RLC Repair Logistic Centre άÐÞÖÐÐÄ
RMP Resource Module Platform ×ÊÔ´Ä£¿éƽ̨
Roaming ÂþÓÎ
RP Regional Processors ¾ÖÓò´¦ÀíÆ÷
RPS Regional Processor Subsystem ¾ÖÓò´¦ÀíÆ÷×Óϵͳ
R-state Release state ÊÍ·Å״̬
RTMA Receiver TMA ½ÓÊÕËþ·Å
RTMA has no duplexers. It is used for amplification of the RX signal. ¨C>DDTMA ¨C>DTMA ¨C>TMA
RU Replaceable Unit ¿ÉÌæ»»µ¥Ôª
An RU consists of one or more HWUs. An RU may be replaced by another RU of the same type. The RU is the smallest unit that can be handled on site.
RX Receiver ½ÓÊÕÆ÷
RXA Receiver antenna branch A ½ÓÊÕÌìÏß֧·A
RXB Receiver antenna branch B ½ÓÊÕÌìÏß֧·B
RXD Receiver Divider ½ÓÊÕÆ÷·ÖƵ
RXDA Receiver Divider Amplifier ½ÓÊÕÆ÷·ÖƵ·Å´ó
RXLEV Measure of signal strength as defined in GSM 05.08:8.1.4
RXQUAL Measure of signal quality as defined in GSM 05.08:8.2.4
SACCH Slow Associated Control Channel ÂýËÙÏà¹Ø¿ØÖÆÐŵÀ
SCH Synchronization Channel ͬ²½ÐŵÀ
SCCP Signalling Connection Control Part ÐÅÁîÁ¬½Ó¿ØÖƲ¿·Ö
SCP Service Control Point ÒµÎñ¿ØÖƽڵã
SDCCH Stand alone Dedicated Control Channel ¶ÀÁ¢×¨ÓÿØÖÆÐŵÀ
Main dedicated signalling channel on the air interface, mainly used for call locating and establishment.
SE Supervised Entity
SES Severely Errored Second
Shadowing ÒõӰЧӦ
Signaling Terminal ÐÅÁîÖÕ¶Ë
SIM Subscriber Identity Module Óû§Ê¶±ðÄ£¿é
SMP Service Management Point ÒµÎñ¹ÜÀí½Úµã
SMS Short Message Service (point to point) ¶ÌÐÅ·þÎñ£¨µã¶Ôµã£©
A short message, up to 160 alphanumeric characters long, can be sent to or from an MS (point to point).
SO Service Object ·þÎñ¶ÔÏó
Speech Coder ÓïÒô±àÂëÆ÷
SPM Space Switch Module ¿Õ·ÖÄ£¿é
SPS Support Processor Subsystem Ö§³Ö´¦ÀíÆ÷×Óϵͳ
SS Swedish Standard Èðµä±ê×¼
SS7 Signalling Systrm No.7 ÆߺÅÐÅÁîϵͳ
SSP Service Support Point ÒµÎñÖ§³Ö½Úµã
STS Statistic And Traffic Measurement Subsystem ͳ¼ÆºÍ»°Îñ²âÁ¿×Óϵͳ
Sub RU A sub-replaceable unit is always connected to a superior Main RU. This connection is used for example for retrieval of the RU identity. A sub-RU normally does not have a processor. Note that an RU with a processor that is not loadable is classified as a sub-RU.
Supplementary Service ¸½¼ÓÒµÎñ
SVS System Voltage Sensor ϵͳµçѹ´«¸ÐÆ÷
SW Software Èí¼þ
SWR Standing Wave Ratio פ²¨±È
SYNC Synchronous ͬ²½
T1 Transmission facility for DS1 (1544 kbit/s). Êý×ÖÐźŲã1ÊäµçÏß
TA Timing Advance
A signal sent by the BTS to the MS which the MS uses to advance its timing of transmissions to the BTS to compensate for propagation delay.
TACH Traffic And Associated Channel ÒµÎñºÍÏà¹ØÐŵÀ
TACS Total Access Communication System È«½ÓÈëͨÐÅϵͳ
TCH Traffic Channel »°ÎñÐŵÀ
The traffic channels carry either encoded speech or user data.
TCS Traffic Control Subsystem »°Îñ¿ØÖÆ×Óϵͳ
TDMA Time Division Multiple Access ʱ·Ö¶àÖ··ÃÎÊ
Multiplexing of several channels in a common frequency band. Each channel is assigned a certain time division, a time slot.
TDMA frame GSM air interface time frame comprising eight time slots. Ò»¸öTDMAʱ֡°üº¬8¸öʱ϶
TDR Time Domain Reflectometer
TEI Terminal Endpoint Identifier ÖÕ¶ËÉ豸ÖÕµãʶ±ðÂë
TEI is an identification code carried by a LAPD frame as a terminal connection endpoint within a Service Access Point (SAP).
TEMS TEst Mobile Station ²âÊÔÒƶ¯Ì¨£¨²âÊÔÊÖ»ú£©
TF Timing Function ¼Æʱº¯Êý
TG Transceiver Group ÊÕ·¢ÐÅ×é
Timing bus The timing bus carries air timing information from the timing unit in the DXU to the TRUs.
TM Transport Module The Transport module is non-RBS equipment belonging to the transport network.
TMA Tower Mounted Amplifier °²×°ÔÚËþÉϵķŴóÆ÷£¨Ëþ·Å£©
There are three types of TMAs: DTMA, RTMA and DDTMA. ¨C>DTMA ¨C>RTMA ¨C>DDTMA
TMSI Temporary Mobile Subscriber Identity ÁÙʱÒƶ¯Óû§Ê¶±ðÂë
TN Timeslot Number ʱ϶Âë
TN O&M Transport Network operation and Maintenance (in general).
Tora ASIC in the TRU
TRA Transcoder Rate Adapter ±àÂëת»»ËÙÂÊÊÊÅäÆ÷
The TRA Unit performs transcoding of speech information and rate adaption of data information.
Tracy ASIC in the TRU
TRAU ËÙÂÊÊÊÅäµ¥Ôª
TRC Transcoder Controller ±àÂëת»»¿ØÖÆÆ÷
TRH Transceiver Handler ÊÕ·¢ÐÅ´¦Àí»ú
TRS Transceiver System ÊÕ·¢Æ÷ϵͳ
TRU Transceiver Unit ÊÕ·¢µ¥Ôª
TRXC Transceiver Controller ÊÕ·¢¿ØÖÆÆ÷
TS Time Slot ʱ϶
A 0.577 ms period (TDMA frame subunit) corresponding to 156.25 raw bits of information. The eight time slots of each TDMA frame are numbered 0...7. -> Burst
TSM Time Switch Module ʱ·ÖÄ£¿é
TSS Trunk And Signaling Subsystem Öм̺ÍÐÅÁî×Óϵͳ
TT Total Time ×Üʱ¼ä
Toll Ticketing Ïêϸ»°µ¥
TU Timing Unit ¼Æʱµ¥Ôª
TX Transmitter ·¢Éä»ú
TXA Transmitter Antenna A ·¢ÉäÌìÏßA
TXB Transmitter Antenna B ·¢ÉäÌìÏßB
TXBP Transmitter Band-Pass filter ·¢Éä´øͨÂ˲¨Æ÷
UAS Unavailable Seconds ÎÞЧʱ¼äƬ
UL Underwrithers' Laboratories (ÃÀ¹ú)±£ÏÕÉÌʵÑéËù
Uplink ÉÏÐÐÁ´Â· Signalling direction, from the MS to the system. ÐźŴ«ÊäµÄ·½Ïò¡£´ÓÒƶ¯Ì¨£¨ÊÖ»ú£©µ½ÏµÍ³µÄ·½Ïò
UPS Uninterrupted Power Supply ²»¼ä¶ÏµçÔ´
VCO Voltage Controlled Oscillator µçѹ¿ØÖÆÕñµ´Æ÷
VSWR Voltage Standing Wave Ratio RF signal measure. The quotient between transmitted and reflected power.
²âÁ¿ÉäƵÐźŵçѹµÄפ²¨±È¡£·¢ÉäÐźÅÓë·´ÉäÐźŹ¦ÂʵıÈÖµ
X bus The X bus carries transmit air data frames between transceivers. This is used for baseband frequency hopping.
X ×ÜÏßЯ´ø
½ÏΪÍêÕû°É¡£
GSM ½Ó¿Ú±ê×¼£º¶¨ÒåBSCÓëBTSÖ®¼äµÄͨѶÊôÐÔ
AC Alternating Current ½»Á÷µç
ACB Alarm Collection Board ¸æ¾¯ÊÕ¼¯°å
ACCH Associated Control Channel Ïà¹Ø¿ØÖÆÐŵÀ
ACCU Alternating Current Connection Unit ½»Á÷µç½ÓÏßµ¥Ôª
A/Dconverter Analog to Digital converter Ä£Êýת»»Æ÷
AGCH Access Grant Channel ½ÓÈë×¼ÐíÐŵÀ
Air conditioner (Active cooler) One version of the climate unit.£¨ÓÐÔ´ÀäÈ´Æ÷£©¿Õµ÷É豸
AIS Alarm Indication Signal ¸æ¾¯Ö¸Ê¾ÐźÅ
ALNA Antenna Low Noise Amplifier ÌìÏßµÍÔë·Å´óÆ÷
AM Application Module Ó¦ÓÃÄ£¿é
AMPS Advanced Mobile Phonesystem ¸ß¼¶Òƶ¯µç»°ÏµÍ³
Antenna Diversity ÌìÏß·Ö¼«½ÓÊÕ
Adaptive Equalizatio ÊÊÓ¦ÐÔ¾ùºâ
AO Application Object Ó¦ÓöÔÏó
Aoc Advice Of Charge ¼Æ·Ñ֪ͨ
APSI Application Platform Services Interface Ó¦ÓÃƽ̨ҵÎñ½Ó¿Ú
ARAE Antenna Related Auxiliary Equipment ÌìÏßÏà¹Ø¸¨ÖúÉ豸
Architecture Ìåϵ½á¹¹
ARFCN Absolute Radio Frequency Channel Number ¾ø¶ÔÎÞÏßµçƵÂÊÐŵÀÊý
ARU Active Replaceable Unit ÓÐÔ´¿ÉÌæ»»µ¥Ôª
ASIC Application Specific Integrated Circuit Ìض¨ÓÃ;¼¯³Éµç·
Astra ASIC in the TRU TRUÖеÄÒ»ÖÖÌض¨ÓÃ;¼¯³Éµç·
AT Alphanumeric Terminal ÎÄ×ÖÊý×ÖÖÕ¶Ë
AUC Authentication Center ¼øȨÖÐÐÄ
Bat Battery µç³Ø
BB Battery Box µç³Ø£¨×飩Ïä
BBS Battery Backup Stand µç³Ø±¸·Ý¼Ü
BCC BTS Color Code BTSÉ«Âë
BCH Broadcast Channel ¹ã²¥ÐŵÀ
BCCH Broadcast Control Channel ¹ã²¥¿ØÖÆÐŵÀ
Downlink only broadcast channel for broadcast of general information at a base station, on a base station basis.
BDM Battery Distribution Module µç³Ø·ÖÅäÄ£¿é
The BDM is an IDM with a battery and a local processor.
BER Bit Error Rate ±ÈÌØÎó²îÂÊ
BFU Battery Fuse Unit µç³Ø±£ÏÕµ¥Ôª
BHCA Busy Hour Call Attempt æʱÊÔºô´ÎÊý
BGW Billing Gateway ¼Æ·Ñ¹Ø¿Ú
Bm Denotes a full rate traffic channel ָʾһ¸öÈ«ËÙÂÊ»°ÎñÐŵÀ
BPC Basic Physical Channel »ù´¡ÎïÀíÐŵÀ
Denotes the air interface transport vehicle formed by repetition of one time slot on one or more radio frequency channels.
BS Base Station »ùÕ¾
BSC Base Station Controller »ùÕ¾¿ØÖÆÆ÷
GSM network node for control of one or more BTSs.
BSCSim Base Station Controller Simulator »ùÕ¾¿ØÖÆÆ÷Ä£ÄâÆ÷
BSIC Base Station Identity Code »ùÕ¾Éí·ÝÂë
BSS Base Station SubSystem »ùÕ¾×Óϵͳ
GSM network logical unit comprising one BSC and one or more BTSs.
BTS Base Transceiver Station »ùÕ¾ÊÕ·¢ÐĄ̊
GSM network unit operating on a set of radio frequency channels in one cell. Burst A portion of digital information, the physical content, that is transferred within the time interval of one time slot.
Burst Âö³å A portion of digital information, the physical content, that is transferred within the time interval of one time slot.
Êý×ÖÐÅÏ¢µÄÒ»²¿·Ö£¬ÔÚÒ»¸öʱ϶µÄʱ¼ä¼ä¸ô´«ÊäÎïÀíÄÚÈÝ
Busy Mode æģʽ
Cabinet The physical housing of a base station. Ò»¸ö»ùÕ¾µÄÎïÀí»ú¼Ü
CBCH Cell Broadcast Channel СÇø¹ã²¥ÐŵÀ
This is a downlink only channel used by the GSM defined SMSCB function.
CC Country Code ¹ú¼Ò´úÂë
CCCH Common Control Channel ¹«¹²¿ØÖÆÐŵÀ
Channel combining the following common control channels:
PCH Paging Channel RACH Random Access Channel AGCH Access Grant Channel
CCITT International Telephone and Telegraph Consultative Committee ¹ú¼Êµç»°Óëµç±¨¹ËÎÊίԱ»á
CCU Climate Control Unit Æøºò¿ØÖƵ¥Ôª
CCS Common Channel Signaling Subsystem ¹²Â·ÐÅÁî×Óϵͳ
CDMA Code Division Multiple Access Âë·Ö¶à·½ÓÈë
CDR Charging Data Recording ¼Æ·ÑÊý¾Ý¼Ç¼ Call Data Record ºô½ÐÊý¾Ý¼Ç¼
CDU Combining and Distribution Unit ºÏ³É·ÖƵµ¥Ôª
CE Conformite¡ä Europe¡äenne
Cell СÇø An area of radio coverage identified by the GSM network by means of the cell identity.
CF Central Functions Ö÷º¯Êý
Channel The common term channel denotes the virtual connection, consisting of physical and logical channels between BSS and MS, during a call in progress. -> Logical Channel -> Physical Channel
CFB Call Forwarding On Mobile Subscriber Busy Óöæºôת
CFU Call Forwarding Unconditional ÎÞÌõ¼þºôת
Channel Coding ÐŵÀ±àÂë
Channel Combination A physical channel on an air interface carries a defined set of logical channels.
ÔÚ¿ÕÆøÖÐЯ´øÒ»×鶨ÒåÁËÂß¼ÐŵÀµÄÎïÀíÐŵÀ
Channel Decoder ÐŵÀ½âÂëÆ÷
Channel group A channel group is a group of dedicated logical channels to a specific MS.
Ò»ÐŵÀ×éÊÇÊÖ»úרÓõÄÒ»×éÂß¼ÐŵÀ
CHS Charging Subsystem ¼Æ·Ñ×Óϵͳ
CGI Cell Global Identity СÇøÈ«Çòʶ±ðÂë
Ciphering ¼ÓÃÜ
CLM Clock Modules ʱÖÓÄ£¿é
CMD Digital Radio Communication Tester Êý×ÖʽÎÞÏßµçͨѶ²âÊÔÆ÷
CME 20 Cellular Mobile Europe Ericsson GSM system Å·ÖÞ°®Á¢ÐÅGSM·äÎÑÒƶ¯Í¨Ñ¶ÏµÍ³
CME 20 Ericsson digital land mobile telecommunication system based on the GSM standards.
CME 201 Ericsson GSM system comprising Ericsson equipment only.
CMRU Central Main Replaceable Unit. Main RU. The RBS is physically connected to the Base Station Controller (BSC) via the CMRU. There is only one CMRU in each RBS. ÖÐÑëÖ÷Ìæ»»µ¥Ôª
CMS 40 Cellular Mobile System Ericsson digital land mobile telecommunication system based on the Joint Technical Committee (JTC)
specification for PCS 1900.
Compr Compressor ѹËõ»ú
CON LAPD concentrator DÐŵÀÁ´Â·½ÓÈë³ÌÐò¼¯ÖÐÆ÷
LAPD concentration is used to reduce the number of required physical links between the BSC and BTS.
DÐŵÀÁ´Â·½ÓÈë³ÌÐò¼¯ÖÐÆ÷ ÓÃÀ´¼õÉÙBSCÓëBTSÖ®¼äµÄÎïÀíÁ´½Ó
Config Configuration ÅäÖÃ
Co-siting Co-siting is to operate the radio base station in GSM together with the radio base station in Total Access Communication
System (TACS) or Nordic Mobile Telephone system (NMT) on the same site by sharing common equipment.
CPU Central Processing Unit ÖÐÑë´¦ÀíÆ÷
CSA Canadian Standards Association ¼ÓÄôó±ê׼лá
CSES Consecutive Severely Errored Second
CSU Channel Service Unit ÐŵÀ·þÎñµ¥Ôª
CU Combining Unit (RU in CDU_D) ºÏ³ÉÆ÷
CUG Closed User Group ±ÕºÏÓû§×é
CW Call Waiting ºô½ÐµÈ´ý
DA Digital Analysis ºÅÂë·ÖÎö
Dannie ASIC in the TRU
DB DataBase Êý¾Ý¿â
DC Direct Current Ö±Á÷µç
DCC Digital Cross Connector Êý×Öʽʮ×ÖÐÎÁ¬½ÓÆ÷
DCCH Dedicated Control Channel רÓÿØÖÆÐŵÀ
Dedicated control channels carry signalling data. רÓÿØÖÆÐŵÀЯ´øÐźÅÊý¾Ý
DCE Data Communication Entity Êý¾ÝͨÐÅʵÌå
DCS Digital Communication System International standard for 1800 MHz based on the GSM standard.
Êý¾ÝͨÐÅ×Óϵͳ¡£Îª1800MHzGSMÖƶ¨µÄÊý×ÖͨѶϵͳ¹ú¼Ê±ê×¼
DDTMA Dual Duplexer Tower Mounted Amplifier This type needs only one combined TX/RX feeder from the BTS to the TMA.
¨C>DTMA ¨C>RTMA ¨C>TMA ¨C>BTS
DIP DIgital Path Êý×ÖͨµÀ
The name of the function used for supervision of the connected PCM lines.
Dixie ASIC in the TRU
DM Degraded Minute Ͻµ±ßÔµ
DMRU Distributed Main Replaceable Unit. ·Ö²¼Ê½Ö÷Ìæ»»µ¥Ôª
If a Main RU is subordinated to the CMRU, it is said to be distributed.
Downlink Signalling direction, from the system to the MS. ÐźŴ«ÊäµÄ·½Ïò£¬´Óϵͳµ½ÊÖ»ú
DP Digital Path Êý×Ö·¾¶
DPX Duplexer Ë«¹¤Æ÷
DS1 Digital Signal level 1 (1544 kbit/s) Êý×ÖÐźŲã1
DSP Digital Signal Processor Êý×ÖÐźŴ¦ÀíÆ÷
DT Data Transcript Êý¾Ý¸±±¾
DTE Data Terminal Entity Êý¾ÝÖÕ¶ËʵÌå
DTMA Duplex TMA Ë«¹¤Ëþ·Å
DTMA is similar to the old ALNA except for different characteristics. ¨C>DDTMA ¨C>RTMA ¨C>TMA
DU Distribution Unit (RU in CDU_D) ·ÖƵÆ÷
Duplex Distance Ë«¹¤¼ä¾à
DX Direct Exchange Ö±½Ó½»»»
DXU Distribution Switch Unit ÐźŷÖÅäת»»µ¥Ôª
DXX Ericsson Cellular Transmission System including NMS °®Á¢ÐÅ·äÎÑ´«Êäϵͳ
E1 Short for G.703 2048 kbit/s PCM link
E-GSM Extended GSM À©Õ¹GSM
EACU External Alarm Connection Unit Íⲿ¸æ¾¯Á¬½Óµ¥Ôª
ECU Energy Control Unit ÄÜÔ´¿ØÖƵ¥Ôª
ECPOOL »ØÉùÒÖÖÆÆ÷³Ø
EC1 External Condition Map Class 1 1¼¶ÍⲿÌõ¼þ
EC2 External Condition Map Class 2 2¼¶ÍⲿÌõ¼þ
EEPROM Electrically Erasable Programmable Read-Only Memory µç¿É²Á³ýÖ»¶Á´æ´¢Æ÷
EFR Speech Coder Enhanced Full Rate Speech Coder ÔöÇ¿ÐÍÈ«ËÙÂÊ»°Òô±àÂëÆ÷
EIR Equipment Identity Register É豸¼ø±ð¼Ä´æÆ÷
EM Extension Modules À©Õ¹Ä£¿é
EMC Electro Magnetic Compatibility µç´Å¼æÈÝÐÔ
EMF ElectroMotive Force µç¶¯ÊÆ
ENV Environmental »·¾³
ES Errored Second Îó²îƬ
ESB External Synchronization Bus Íâͬ²½×ÜÏß
ESD ElectroStatic Discharge ·Åµç
ESO Ericsson Support Office °®Á¢ÐÅÖ§³Ö°ìÊ´¦
ETC Exchange Terminal Circuit ½»»»»úÖն˵ç·
ETSI Å·ÖÞµçÐűê׼лá
EXT External Íⲿ
FACCH Fast Associated Control Channel ¿ìËÙÏà¹Ø¿ØÖÆÐŵÀ
Main signalling channel in association with a TCH.
Fading Dip Ë¥Â䲨¹È
FCC Federal Communications Commission ÃÀ¹úͨÐÅίԱ»á
FCCH Frequency Correction Channel ƵÂÊУÕýÐŵÀ
FCOMB Filter COMBiner Â˲¨ºÏ³ÉÆ÷
FCS Frame Check Sequence ֡УÑéÐòÁÐ
FCU Fan Control Unit ·çÉÈ¿ØÖÆÆ÷
FDL Facility Data Link ¼òÒ×Êý¾ÝÁ´Â·
FDMA Frequency Division Multiple Access Ƶ·Ö¶à·½ÓÈë
FER Frame Erasure Ratio µôÖ¡ÂÊ
FIU Fan Interface Unit ·çÉȽӿڵ¥Ôª
FMS File Management Subsystem Îļþ¹ÜÀí×Óϵͳ
Frequency Hopping ÌøƵ
FS Function Specification ¹¦ÄÜ˵Ã÷
FSC Field Support Centre ´Å³¡¼¤ÀøÖ§³ÖÖÐÐÄ
FU Filter Unit (RU in CDU_D) Â˲¨Æ÷
Fud Filter Unit with duplexer (RU in CDU_D) Ë«¹¤Â˲¨Æ÷
FXU Future Expansion Unit Ô¤ÁôÀ©Õ¹µ¥Ôª
G01 MO model for RBS 200.
G12 MO model for RBS 2000.
GMSK Gaussian Minimum Shift Keying ¸ß˹×îСƵÒƼü¿Ø
GPS Global Position System È«Çò¶¨Î»ÏµÍ³
GSM Global System for Mobile communications International standard for a TDMA digital mobile communication system. Originally, GSM was an abbreviation for Group Special Mobile, which is a European mobile lecommunication interest group, established in 1982. È«ÇòÒƶ¯Í¨ÐÅϵͳ
GSS Group Switching Subsystem Ⱥ½»»»×Óϵͳ
GUI Graphical User Interface ͼÐÎÓû§½çÃæ
HCOMB Hybrid COMBiner »ìºÏºÏ³ÉÆ÷
HDLC High level Data Link Control ¸ß¼¶Êý¾ÝÁ´Â·¿ØÖÆ
HDSL High bit rate Digital Subscriber Line ¸ßËÙÂÊÊý×ÖÓû§Ïß·
Heat Exchanger One version of the climate unit É¢ÈÈÆ÷
HEU Heat Exchanger Unit ÈȽ»»»Æ÷
HLIN High Level IN ¸ßµçƽÊäÈë
HLOUT High Level OUT ¸ßµçƽÊä³ö
HLR HOME LOCATION REGISTER ¹éÊôλÖüĴæÆ÷
HMS Heat Management System ÈȹÜÀíϵͳ
HSN Hopping Sequence Number ÌøƵÐòÁкÅ
Hum Humidity ÎÂʪ¶È
HW Hardware Ó²¼þ
HWU Hardware Unit Ó²¼þµ¥Ôª
An HWU consists of one or more SEs. An HWU is a functional unit within the RBS. The HWU is either active (equipped with a processor) or passive (without processor).
IC Integrated Circuit ¼¯³Éµç·
ID Identification Éí·Ýʶ±ð
IDB Installation DataBase °²×°Êý¾Ý¿â
IDM Internal Distribution Module ÄÚ²¿·ÖÅäÄ£¿é
IEC International Electric Commission ¹ú¼Êµç¹¤Î¯Ô±»á
IMEI International Mobile Station Equipment Identity ¹ú¼ÊÒƶ¯Ì¨É豸ʶ±ðÂë
IMSI International Mobile Subscriber Identity ¹ú¼ÊÒƶ¯Óû§Éí·Ýʶ±ðÂë
IN Intelligent Networks ÖÇÄÜÍø
INIT Initial Ê×д×Öĸ
INT Internal ÄÚ²¿
I/O Input/Output (I/O) System ÊäÈë/Êä³öϵͳ
IR InfraRed ºìÍâÏß
IS Interface Switch ½Ó¿Ú¿ª¹Ø
ISDN Integrated Services Digital Network, ×ۺϷþÎñÊý×ÖÍø
ISP Internet·þÎñÌṩÕß
IWD InterWork Description ½»»¥ÊôÐÔ
IWF Interworking Function ½»»¥¹¤×÷¹¦ÄÜ
I1A Internal Fault Map Class 1A 1A¼¶ÄÚ²¿¹ÊÕÏ
I1B Internal Fault Map Class 1B 1B¼¶ÄÚ²¿¹ÊÕÏ
I2A Internal Fault Map Class 2A 2A¼¶ÄÚ²¿¹ÊÕÏ
JTC Joint Technical Committee ÁªºÏ¼¼ÊõίԱ»á
Kc Communication Key ͨÐÅÃÜÔ¿
Ki Identity Key Éí·ÝÃÜÔ¿
LA Location Area λÖÃÇø
LAC Location Area Code λÖÃÇø´úÂë
LAI Location Area Identity λÖÃÇø±àºÅ
LAPD Link Access Procedures on D-channel D ÐŵÀÁ´Â·½ÓÈë³ÌÐò
LAPD is the data link layer (layer 2) protocol used for communication between the BSC and the BTS on the Abis interface.
Abis layer 2 is sometimes used synonymously with LAPD.
LBO Line Build Out ÏßÔöÒæ
LED Light Emitting Diode ·¢¹â¶þ¼«¹Ü
LLB Line Loop Back »·Ïß±³°å
LNA Low Noise Amplifier µÍÔë·Å´óÆ÷
Local bus The local bus offers communication ÔÚDXUºÍTRUECUÖ®¼äÌṩͨѶµÄ¾ÖÓò×ÜÏß
between a central main RU (DXU) and distributed main RUs (TRU and ECU).
Local mode When the RU is in RU mode Local it is not prepared for BSC communication. ±¾µØģʽ
Local/Remote switch Using the Local/Remote switch, an operator orders the RU to enter Local or Remote mode. ±¾µØ/Ô¶¶Ë¿ª¹Ø
Logical Channel A logical channel represents a specified portion of the information carrying capacity of a physical channel.
GSM defines two major categories of logical channels: TCHs Traffic CHannels, for speech or user data CCHs Control CHannels, for control signalling. -> Physical Channel -> Channel Combination
Logical RU A unit which can be referred to, but is not a single physical unit. There are three different kinds of logical RUs:
1. Buses 2. Antennas 3. Environment
LOF Loss Of Frame Ö¡ËðºÄ
LOS Loss Of Signal ÐźÅËðºÄ
LS Linkset Á´Â·¼¯
Magazine A magazine is a reserved space in the cabinet, which may hold one or more RUs.
Main RU A main replaceable unit is a replaceable unit that contains one or more processors, to which software can be downloaded from the BSC.
MAP Mobile Application Part Òƶ¯Ó¦Óò¿·Ö
Mapping Ó³Éä
MAS Maintenance Subsystem ά»¤×Óϵͳ
MCC Mobile Country Code ¹ú¼ÒÒƶ¯´úÂë
MCS Man-Machine Communication Subsystem ÈË»úͨÐÅ×Óϵͳ
MHS Modification Handling System Ericsson trouble report database ÐÞÕý´¦Àíϵͳ °®Á¢ÐŹÊÕϱ¨¸æÊý¾Ý¿â
MIN Mobile IN Òƶ¯ÖÇÄÜÍø
MMI Man-Machine Interface ÈË»ú½çÃæ
MO Managed Object ¹ÜÀí¶ÔÏó
MS Mobile Station Òƶ¯Ì¨
MSC Mobile services Switching Centre Òƶ¯·þÎñ½»»»ÖÐÐÄ
GSM network unit for switching, routing and controlling calls to and from the Public Switched Telephone Network (PSTN) and other networks.
MSIN Mobile Subscriber Identification Number Òƶ¯Óû§Ê¶±ðºÅ
MSISDN Mobile Subscriber ISDN Number Òƶ¯Óû§ISDNºÅ
MSRN Mobile Station Roaming Number Òƶ¯Ì¨ÂþÓκÅ
MSTP Mobile Station Test Point Òƶ¯Ì¨²âÊÔµã
MTP Message Transfer Part ÏûÏ¢´«ËͲ¿·Ö
Multidrop Two or more RBSs are connected in a chain to the same transmission system. Á½¸ö»ò¸ü¶àµÄ»ùÕ¾±»Á¬½Óµ½Í¬Ò»Ìõ´«ÊäϵͳÉÏ
All the relevant timeslots are dropped out by each RBS. (This function is sometime called cascading.)
Multipath Fading ¶à¾¶Ë¥Âä
NAS Network Access Server ½ÓÈë·þÎñÆ÷
NDC National Destination Code ¹úÄÚÄ¿µÄÂë
NMC Network Management Center ÍøÂç¹ÜÀíÖÐÐÄ
NMS Ericsson Network Management System in DXX ÔÚDXXÖеİ®Á¢ÐÅÍø¹Üϵͳ
Nominal Power The nominal power is the power level defined when configuring the transceiver. ±ê³Æ¹¦ÂÊ
±ê³Æ¹¦ÂÊÊǵ±ÅäÖÃÊÕ·¢Æ÷ʱ¶¨ÒåµÄ¹¦Âʵçƽ
NS Network Synchronization Íøͬ²½
NSS Network&Switching Subsystem ÍøÂçºÍ½»»»×Óϵͳ
N terminal Neutral terminal in a AC mains connection. ÔÚ½»Á÷¸ÉÏß½ÓÏßÖеÄÁãÏߣ¨ÖÐÐÔ½ÓÏ߶ˣ©
O&M Operation and Maintenance ²Ù×÷ºÍά»¤
General term for activities such as configuration, utilization of channels (frequency bands), cell planning, stemsupervision, hardware and software maintenance, subscriber administration,etc.
OMC Operation and Maintenance Centre ²Ù×÷ºÍά»¤ÖÐÐÄ
OML Operation and Maintenance Link Layer 2 communication link for operation and maintenance services on Abis.
²Ù×÷ºÍά»¤Á¬½Ó²ã2
OMS Operation And Maintenance Subsystem ²Ù×÷ºÍά»¤×Óϵͳ
OMT Operation and Maintenance Terminal ²Ù×÷ºÍά»¤ÖÕ¶Ë
The OMT is a terminal that supports functions for handling the RBS on site. The terminal can be a portable PC.
Operation Operation is the normal, everyday running of the RBS with full functionality. ÔËתÕý³££¬ÈÕ³£»ùÕ¾ÔËÐÐËùÓеĺ¯Êý
OPI OPerational Instructions ²Ù×÷ÊÖ²á
OSI Open System Interconnection ¿ª·Åϵͳ»¥Á¬
OSS Operation Maintenance Support System ÔËÐÐά»¤Ö§³Öϵͳ
PAGCH Paging And Access Grant Channel Ñ°ºôºÍ½ÓÈë×¼ÐíÐŵÀ
Paging Message Ñ°ºôÏûÏ¢
P-GSM Primary GSM
Passive RU A passive replaceable unit has a very low level of intelligence and is independent of the processor system.
Path Loss ·¾¶ËðºÄ
PCH Paging CHannel
Downlink only subchannel of CCCH for system paging of MSs. -> CCCH
PCM Pulse Code Modulation Âö³åµ÷ÖƱàÂë
PCS Personal Communication Services ¸öÈËͨÐÅ·þÎñ
PCU Packet Control Unit ÐÅÏ¢°ü¿ØÖƵ¥Ôª
PE terminal Protective Earth terminal in a AC mains connection. ÔÚ½»Á÷Ö÷¸ÉÏßÖеı£»¤µØ½ÓÏ߶Ë
PFWD Power Forward Ç°Ïò¹¦ÂÊ
Physical Channel ÎïÀíÐŵÀ An air interface physical channel carries one or more logical channels. A physical channel uses a combination of frequency and time division multiplexing and is defined as a sequence of radio frequency channels and time slots.
-> TDMA frame -> Logical channel
PIN Personal Identification Number ¸öÈËÉí·ÝºÅÂë
PLB Payload Loop Back ÓÐЧ¸ºÔØ»·Â·°å
PLMN Public Land Mobile Network ¹«ÖÚ½µØÒƶ¯Íø
A network, established and operated by an administration or its licensed operator(s), for the specific purpose of providing land mobile communication services to the public. It provides communication possibilities for mobile users. For comunication between mobile and fixed users, interworking with a fixed network is necessary.
Plug-In ²å¼þ³ÌÐò/¿É²ðжµÄ
PPE Personal Protective Equipment רÓñ£»¤É豸
PREFL Power Reflected ·´Ïò¹¦ÂÊ
Protocol ÐÒé
PSTN (Public Switched Telephone Network ¹«¹²¿ª¹Øµç»°ÍøÂç
PSU Power Supply Unit µçÔ´µ¥Ôª
PUK PIN½âËøÂë
PWU Power Unit µçÔ´µ¥Ôª
RA Route Analysis ·ÓÉ·ÖÎö
Rate Adaptation(RA) ËÙÂÊÊÊÅä
RACH Random Access Channel Ëæ»ú½ÓÈëÐŵÀ
Uplink only subchannel of CCCH for MS request for allocation of a dedicated channel. -> CCCH
RAI Remote Alarm Indication Ô¶¶Ë¸æ¾¯Ö¸Ê¾
RAM Random Access Memory Ëæ»ú´æ´¢Æ÷
Rayleigh Fading ÈðÀûË¥Âä
RBER Radio Bit Error Ratio ÎÞÏß±ÈÌØÎó²îÂÊ
RBS Radio Base Station ÎÞÏß»ùÕ¾
All equipment forming one or more Ericsson base stations. ->BTS
RE Register Function¼Ä´æÆ÷¹¦ÄÜ
Remote mode When the RU is in RU mode Remote, a link is established between the BCS and the central main RU.Ô¶¶Ëģʽ
RF Radio Frequency ÉäƵ
RFCH Radio Frequency Channel ÉäƵÐŵÀ A radio frequency carrier with its associated bandwidth.
RFTL Radio Frequency Test Loop ÉäƵ²âÊԻط
RLC Repair Logistic Centre άÐÞÖÐÐÄ
RMP Resource Module Platform ×ÊÔ´Ä£¿éƽ̨
Roaming ÂþÓÎ
RP Regional Processors ¾ÖÓò´¦ÀíÆ÷
RPS Regional Processor Subsystem ¾ÖÓò´¦ÀíÆ÷×Óϵͳ
R-state Release state ÊÍ·Å״̬
RTMA Receiver TMA ½ÓÊÕËþ·Å
RTMA has no duplexers. It is used for amplification of the RX signal. ¨C>DDTMA ¨C>DTMA ¨C>TMA
RU Replaceable Unit ¿ÉÌæ»»µ¥Ôª
An RU consists of one or more HWUs. An RU may be replaced by another RU of the same type. The RU is the smallest unit that can be handled on site.
RX Receiver ½ÓÊÕÆ÷
RXA Receiver antenna branch A ½ÓÊÕÌìÏß֧·A
RXB Receiver antenna branch B ½ÓÊÕÌìÏß֧·B
RXD Receiver Divider ½ÓÊÕÆ÷·ÖƵ
RXDA Receiver Divider Amplifier ½ÓÊÕÆ÷·ÖƵ·Å´ó
RXLEV Measure of signal strength as defined in GSM 05.08:8.1.4
RXQUAL Measure of signal quality as defined in GSM 05.08:8.2.4
SACCH Slow Associated Control Channel ÂýËÙÏà¹Ø¿ØÖÆÐŵÀ
SCH Synchronization Channel ͬ²½ÐŵÀ
SCCP Signalling Connection Control Part ÐÅÁîÁ¬½Ó¿ØÖƲ¿·Ö
SCP Service Control Point ÒµÎñ¿ØÖƽڵã
SDCCH Stand alone Dedicated Control Channel ¶ÀÁ¢×¨ÓÿØÖÆÐŵÀ
Main dedicated signalling channel on the air interface, mainly used for call locating and establishment.
SE Supervised Entity
SES Severely Errored Second
Shadowing ÒõӰЧӦ
Signaling Terminal ÐÅÁîÖÕ¶Ë
SIM Subscriber Identity Module Óû§Ê¶±ðÄ£¿é
SMP Service Management Point ÒµÎñ¹ÜÀí½Úµã
SMS Short Message Service (point to point) ¶ÌÐÅ·þÎñ£¨µã¶Ôµã£©
A short message, up to 160 alphanumeric characters long, can be sent to or from an MS (point to point).
SO Service Object ·þÎñ¶ÔÏó
Speech Coder ÓïÒô±àÂëÆ÷
SPM Space Switch Module ¿Õ·ÖÄ£¿é
SPS Support Processor Subsystem Ö§³Ö´¦ÀíÆ÷×Óϵͳ
SS Swedish Standard Èðµä±ê×¼
SS7 Signalling Systrm No.7 ÆߺÅÐÅÁîϵͳ
SSP Service Support Point ÒµÎñÖ§³Ö½Úµã
STS Statistic And Traffic Measurement Subsystem ͳ¼ÆºÍ»°Îñ²âÁ¿×Óϵͳ
Sub RU A sub-replaceable unit is always connected to a superior Main RU. This connection is used for example for retrieval of the RU identity. A sub-RU normally does not have a processor. Note that an RU with a processor that is not loadable is classified as a sub-RU.
Supplementary Service ¸½¼ÓÒµÎñ
SVS System Voltage Sensor ϵͳµçѹ´«¸ÐÆ÷
SW Software Èí¼þ
SWR Standing Wave Ratio פ²¨±È
SYNC Synchronous ͬ²½
T1 Transmission facility for DS1 (1544 kbit/s). Êý×ÖÐźŲã1ÊäµçÏß
TA Timing Advance
A signal sent by the BTS to the MS which the MS uses to advance its timing of transmissions to the BTS to compensate for propagation delay.
TACH Traffic And Associated Channel ÒµÎñºÍÏà¹ØÐŵÀ
TACS Total Access Communication System È«½ÓÈëͨÐÅϵͳ
TCH Traffic Channel »°ÎñÐŵÀ
The traffic channels carry either encoded speech or user data.
TCS Traffic Control Subsystem »°Îñ¿ØÖÆ×Óϵͳ
TDMA Time Division Multiple Access ʱ·Ö¶àÖ··ÃÎÊ
Multiplexing of several channels in a common frequency band. Each channel is assigned a certain time division, a time slot.
TDMA frame GSM air interface time frame comprising eight time slots. Ò»¸öTDMAʱ֡°üº¬8¸öʱ϶
TDR Time Domain Reflectometer
TEI Terminal Endpoint Identifier ÖÕ¶ËÉ豸ÖÕµãʶ±ðÂë
TEI is an identification code carried by a LAPD frame as a terminal connection endpoint within a Service Access Point (SAP).
TEMS TEst Mobile Station ²âÊÔÒƶ¯Ì¨£¨²âÊÔÊÖ»ú£©
TF Timing Function ¼Æʱº¯Êý
TG Transceiver Group ÊÕ·¢ÐÅ×é
Timing bus The timing bus carries air timing information from the timing unit in the DXU to the TRUs.
TM Transport Module The Transport module is non-RBS equipment belonging to the transport network.
TMA Tower Mounted Amplifier °²×°ÔÚËþÉϵķŴóÆ÷£¨Ëþ·Å£©
There are three types of TMAs: DTMA, RTMA and DDTMA. ¨C>DTMA ¨C>RTMA ¨C>DDTMA
TMSI Temporary Mobile Subscriber Identity ÁÙʱÒƶ¯Óû§Ê¶±ðÂë
TN Timeslot Number ʱ϶Âë
TN O&M Transport Network operation and Maintenance (in general).
Tora ASIC in the TRU
TRA Transcoder Rate Adapter ±àÂëת»»ËÙÂÊÊÊÅäÆ÷
The TRA Unit performs transcoding of speech information and rate adaption of data information.
Tracy ASIC in the TRU
TRAU ËÙÂÊÊÊÅäµ¥Ôª
TRC Transcoder Controller ±àÂëת»»¿ØÖÆÆ÷
TRH Transceiver Handler ÊÕ·¢ÐÅ´¦Àí»ú
TRS Transceiver System ÊÕ·¢Æ÷ϵͳ
TRU Transceiver Unit ÊÕ·¢µ¥Ôª
TRXC Transceiver Controller ÊÕ·¢¿ØÖÆÆ÷
TS Time Slot ʱ϶
A 0.577 ms period (TDMA frame subunit) corresponding to 156.25 raw bits of information. The eight time slots of each TDMA frame are numbered 0...7. -> Burst
TSM Time Switch Module ʱ·ÖÄ£¿é
TSS Trunk And Signaling Subsystem Öм̺ÍÐÅÁî×Óϵͳ
TT Total Time ×Üʱ¼ä
Toll Ticketing Ïêϸ»°µ¥
TU Timing Unit ¼Æʱµ¥Ôª
TX Transmitter ·¢Éä»ú
TXA Transmitter Antenna A ·¢ÉäÌìÏßA
TXB Transmitter Antenna B ·¢ÉäÌìÏßB
TXBP Transmitter Band-Pass filter ·¢Éä´øͨÂ˲¨Æ÷
UAS Unavailable Seconds ÎÞЧʱ¼äƬ
UL Underwrithers' Laboratories (ÃÀ¹ú)±£ÏÕÉÌʵÑéËù
Uplink ÉÏÐÐÁ´Â· Signalling direction, from the MS to the system. ÐźŴ«ÊäµÄ·½Ïò¡£´ÓÒƶ¯Ì¨£¨ÊÖ»ú£©µ½ÏµÍ³µÄ·½Ïò
UPS Uninterrupted Power Supply ²»¼ä¶ÏµçÔ´
VCO Voltage Controlled Oscillator µçѹ¿ØÖÆÕñµ´Æ÷
VSWR Voltage Standing Wave Ratio RF signal measure. The quotient between transmitted and reflected power.
²âÁ¿ÉäƵÐźŵçѹµÄפ²¨±È¡£·¢ÉäÐźÅÓë·´ÉäÐźŹ¦ÂʵıÈÖµ
X bus The X bus carries transmit air data frames between transceivers. This is used for baseband frequency hopping.
X ×ÜÏßЯ´ø
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