EVOLIUM Base Station Subsystem Description

5/28/2018 EVOLIUM Base Station Subsystem Description

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AlcatelUniversity - 8AS 90125 0142 VT ZZA Ed.01 - August 2000 1

EVOLIUM

Base Station SubsystemDescription


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EVOLIUMBSS DescriptionCourse content

S1: EVOLIUMTMBase Station Subsystemarchitecture

S2: Base Station Controller description

S3: Transcoder description

S4: Base Transceiver Station description:Alcatel 9100, Micro BTS Alcatel 910 andEVOLIUMBTS Evolution

S5: Alcatel 935 MFS description

S6: BSS Interfaces description

S7: Operation and Maintenance principles


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Session 1

EVOLIUMTMBase Station System

architecture


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S1: EVOLIUMBSS architectureObjective and program

Objective: To describe the Alcatel 900/1800 BSSnetwork

Program: Functions

Architecture

Telecom features

Cell Types


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S1: EVOLIUMBSS architectureFunctions

Mobile telecommunication overviewBase Station Subsystem

The very first aim of a communication system is to transport user information(speech or data).

NetworkSubSystem

MobileStations

Public Land Mobile Network Public SwitchedTelephone Network


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BSS functions (1) : CALL SETUP

The BSS provides radio coverage (signalling and trafficchannels) between Mobiles and the NSS.

MOBILITY MANAGEMENT CALL

Location updating

SUPPLEMENTARY SERVICE CALL

Short Message Service

USER TRAFFIC CALL Speech

Data


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BSS functions (2) : CALL HANDLING

IN CALL MODIFICATION

Speech or data / Fax

HANDOVER

Type : Inter cell external / Inter cell internal / Intra cell Cause : Better cell / Bad quality, bad received level,

interference / Mobile Velocity / Traffic / Congestion /Preferred band

CIPHERING

no / A5-1 / A5-2

OVERLOAD CONTROL

BSC / BTS


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BSS Functions (3) : CALL RELEASE

CALL RELEASE in normal service

Calls terminated by call management

Calls terminated following a channel change

SPECIAL CASE

Call release following a reset

BSC, BTS or MS initiated release


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BSS Functions (4) : Operation and Maintenance

New concept to make the Network control

CONFIGURATION Management

ALARM Management

PERFORMANCE Management

MSC


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Packet

SwitchingNetwork Internet

Packet Data Network

data


Evolution to GPRS

BSS

PSTN

NSS

GPRSMobile

Stations

PLMN

speech


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Evolution to GPRS

General Packet Radio Serviceis the solution chosen byETSI to answer the demand for increased data transmissionrates.

Two parallel systems in the PLMN:

Circuit-switched transmission for speech

Packet-switched transmission for dataPacket

SwitchingNetwork


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S1: EVOLIUMBSS architectureArchitecture

BSS components in the PLMN BTS: Base Transceiver Station

BSC: Base Station Controller

TC: Transcoder

PSTNBSC

MobileStations

T

C

B

TS

B

T

S

PLMN

BSS NSS

B

T

S

BSCT

C


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NSS components in the PLMN MSC: Mobile Switching Center

HLR: Home Location Register

VLR: Visitor Location Register

AuC: Authentication Center

EIR: Equipment Identity Register

PSTNBSC

MobileStations

T

C

B

TS

B

T

S

MSC

PLMN

BSS NSS

HLR

VLR

AuC

EIR


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BSS components for GPRSsolution MFS: Multi-BSS Fast packet Server

SGSN: Serving GPRS Support Node

GGSN: Gateway GPRS Support Node

A935MFS

SGSN

GGSN

InternetIP GPRSBackbone

PSTNBSC

T

C

B

T

S

B

T

S

MSC

GPRSMobile

Stations

HLR

GGSNSGSN

A935

MFS

speech

data


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External components OMC-R: Operations & Maintenance Center - Radio

NMC: Network Management Center

CBC: Cell Broadcast centerCBC

NMC

MSCOMC-R

MSC

OMC-R

NMC

CBC


PSTNBSC

T

C

B

T

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS


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Interfaces in the BSSA-bis

A-ter / A

Gb

MSC

OMC-R

NMC

CBC


PSTNBSC

T

C

B

T

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bis

A-ter

A-ter

Gb

A


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GGSN

IP GPRS

Backbone

Internet

Gb

SGSN

T

C

B

T

S

B

T

S

MSC

PublicSwitchedNetwork

A

EVOLIUMBSS

B

T

S

BSC

BSC

HLR

A935

MFS

MSC

OMC-R

CBC

NMC

GPRS communication: with several BSCs


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S1: EVOLIUMBSS architectureTelecom features

Features defined in the GSM recommendations

Cellular Environment

Frequency Hopping

Radio Frequency hopping

Base Band Frequency hopping

Radio Power Control uplink and downlink (BTS / MS)

Discontinuous Transmission (DTX)

Discontinuous Reception (DRX) (MS)

Call Re-establishment by MS

Enhance Full Rate (EFR)


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SMS CB environment(Short Message Service

Cell Broadcast)

BSC

BSC

BSC

CBE

CBE

Enhanced CBS

CBC

LEGEND

Cell

Broadcast Areas

HMIOMC

Simplified SMS - CB


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BSS features (1)

Multiple Human Machine Interface (HMI)

Night time Concentration

Secured X25 connection

Usage State on Demand

BSC Alerter

Q3 MultiManager

Abis signalling links static multiplexing

Multiband operation

MSC

OMC-R

NMC


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BSS features (2)

Online/Offline Hardware Extension/Reduction

Provisioning Radio Configuration

Performance Management

Indicator/counter Display via NPA

OMC-R - MFS support

New Equipment for GPRS solution:

A1353-RA OMC-R

A935 MFS, for GPRSMSC

OMC-R

A935

MFS


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Usage of Radio Resources with GPRS

Cellular networkwith GPRS backbone


Data Network


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S1: EVOLIUMBSS architectureCell Types

Satellite

Macro-CellMicro-Cell

Urban

In-Building

Pico-Cell

Global

Rural & Suburban

Cell Types


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Cell 1

Cell 3

Cell 2 Sector 2

Sector 3

Sector 1

BTS

Antenna

Sectored site configuration and cells types

Umbrella Cell

Urban area

Pedestrian area

Mini Cellsor micro


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SectoredSite

Umbrella Cell

Single Cell

Concentric

Cell

Microcellor

Mini cell Microcellor

Mini cellMicrocell

orMini cell

Umbrella &

Concentric

CellMicrocellor

Mini cell Microcellor

Mini cellMicrocell

orMini cell

Extended Cell

Inner Zone

Outer Zone

Inner Cell

Outer CellInner Limit

Overlap Zone

Inner Cell

Outer Limit

Outer Cell

50 km

35 km

Cell Configuration


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Inner Cell

Highway

Outer Cell

70 km

max

Urban Area

35 km

max

Example of extended cell topology


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GSM-900

GSM-1800

macro macro

umbrella macro

cells

City center

Example of multiband hierarchical network

O SS


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Example of Handover

Macro GSM 1800

Macro GSM 900

Micro GSM 1800

Fast dualBand MS

Slow dualBand MS

Fast dual

Band MS


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S1:EVOLIUMBSS architectureExercises

Give 3 different Handover causes?

What does the MFS abbreviation mean?

Does the GPRS use the switching technology?

What is the interface between BSC and TC-SM?

What different types of cell are existing in a network?

For Alcatel GPRS solution, what type of equipment doyou need?


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Session 2

EVOLIUMTMBase Station Controller

description

S2 BSC description


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S2:BSC descriptionObjective and program

Objective: To present the EVOLIUMBase StationController

Program:Situation and features

Functions

Hardware Configuration

BSC Configurations

BSC d i ti


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S2:BSC descriptionSituation and features

The Base Station Controller:

EVOLIUM BSSBSC

MSC

OMC-R


PSTNBSC

TC

B

TS

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bisA-ter

A-ter

Gb

A

S2: BSC description


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The BSC provides:

Resource management

Database management

Radio measurement processing

Channel managementOperation and Maintenance functions within the BSS

Communication with the OMC-R

Switching between the Air Interface and fixed Network


S2: BSC description


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Transmission equipment in the BSC:

BIE: Base station Interface Equipment

Performs signalling and sub-multiplexing on the Abisinterface

The Sub-Multiplexer (SM) is used between BSC and TC

minimizes the number of PCM links

TSC: Transcoder Sub-multiplexer Controller

Collects data transmission


T

CBSCSM SM

S2: BSC description


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S2:BSC descriptionFunctions

BSC Telecommunications functions (1)

Radio Frequency channel management

Traffic channel resource management

Radio channel managementConnection of A channels to Radio channels

Message Distribution

Radio Measurement

BSC

B

TS

S2: BSC description


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BSC Telecommunications functions (2)

Central Trace

Overload Control

Short Message ServiceIn Call Modification

Immediate Assignment Reject

Multiband MSs

BSC

SC


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Data Base

BSS (BSC + BTS + Transmission) Software and data storage

File downloading from BSC Terminal or OMC-R Terminal

Network Element (NE) Supervision

Collection of data (alarm, performance) from NE

Fault Management

Fault Detection

Fault Localisation

Defence (ex: disable Last N7 is not possible)

Radio Resource Reconfiguration

BSC

MSC

OMC-R

BSC term

BSC d i i


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Configuration Management

Hardware (Configuration) :

Displayed from BSC Terminal

Modified from OMC-R Terminal

Software/Database (Configuration) :

Stored in BSC

Modified from OMC-R Terminal

Logical Parameters :

Stored in BSC Modified from OMC-R Terminal

BSC

MSC

OMC-R

BSC term

BSC d i ti


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Observation and Measurement management and transfer toOMC-R

Alerter

Transmission module maintenance

The BSC manages the transmissionsBSC

MSC

OMC-R

BSC term

BSC d i ti


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S2:BSC descriptionHardware configuration

TSU-Abis TSU-Ater

2 Stage

group

switch1 1

14 9

BSC

Common TSU

Qmux bus

TSCA

BSC-terminal OMC-R

1

2

3

1

6

Clock &Alarm

1

8

DC/DC1

47

A-bis

Interface

BroadcastBus

A-ter

Muxes

1

2

BSC architecture:

BSC d i ti


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EVOLIUM BSC consists of three building blocks

A-bis TSUto connect BTS and TRX

Capacity of 32 TRX per TSU

A-ter TSUto provide the connection to the Transcoder

Capacity of 240 channels per TSU

Common Functions TSUto provide the O&M and systemfunctions for the BSC

All modules in hot-standby

Two spare slots for future extensions

Each BSC configuration consists of one CommonFunctions TSU and several A-bis and A-ter TSU

S2 BSC d i ti


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BSC G2 TSU architecture:DTCC

DTCC

DTCC

DTCC

DTCC

DTCC

DTCC

DTCC

AS

MB

AS

MB

Ater-TSU

S

W

I

T

C

H

OSI 1

OSI 2

System 1

System 2

Broadcast

Broadcast

Spare

Spare

Common TSU

S

W

I

T

C

H

X25 to OMC

TCUC

TCUC

TCUC

TCUC

TCUC

TCUC

TCUC

TCUC

Abis-TSU

B

I

U

A

S

W

I

T

C

H

Port 1

Port 2

Port 3

Port 4

Port 5

Port 6

6 ABIS

TCUC

TCUC

TCUC

TCUCTCUC

TCUC

TCUC

TCUC

Abis-TSU

B

I

U

A

S

WI

T

C

H

S

W

I

T

C

H

6 ABIS

S2: BSC description


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S2:BSC descriptionBSC Configurations

Cabinet Layout, maximum Configuration (conf. 6):

Smaller configurations consist of less racks or half filled racks

AIRBAFFLE

A-BIS TSU

GS

GSCOMMON TSUTSCA

ClockStage 1

Stage 2Stage 2 Stage 2

Group Switch GS GS

A-TER TSU A-TER TSU

A-BIS TSU

A-BIS TSU

A-TER TSU

A-BIS TSU

Stage 2

A-BIS TSU

AIRBAFFLE

A-BIS TSU

GS

GSA-BIS TSUTSCA

ClockStage 1

Stage 2Stage 2 Stage 2

A-BIS TSU

Group Switch GS GS

A-TER TSU

A-TER TSU A-TER TSU

A-BIS TSU

Stage 2

A-BIS TSU

AIRBAFFLE

A-BIS TSU

GS

A-BIS TSUTSCA

ClockStage 1

A-BIS TSU

A-TER TSU

A-TER TSU A-TER TSU

A-BIS TSU

S2: BSC description


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S2:BSC descriptionBSC Configurations

6 Configurations: up to 352 TRX/255 cells

Maximum capacity can be achieved in a phased approach

Transcoder is configured according to traffic requirements

One TC cabinet per BSC cabinet or less if low traffic

Confi-guration

Trafficca acit in

Erlang

Transceivers(Typic/Max)

Cells Ainterfacetrunks

SS7 links256

SCCP)

Abis interfacetrunks

(chain/loop)

Cabinets Abis/AterTSU

1 160 30/32 21 16 4 6/3 1 1/2

2 576 110/128 94 24 6 24/12 1 4/3

3 960 160/192 140 40 10 36/18 2 6/5

4 1152 250/288 212 48 12 54/27 2 9/6

5 1500 300/352 255 64 16 66/33 3 11/8

6 1500 352/352 255 72 16 84/42 3 14/9

S2: BSC description


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S2: BSC descriptionExercise

How many types of TSU exist in the BSC?

What is the TSC?

Where do you put the Multiplexing equipment?

What is the maximum number of racks for one BSC?

What is the maximum of cells capacity in B6?


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Session 3

Transcoder description



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S3:Transcoder descriptionObjective and program

Objective: To present the two types of Transcoder:

TC G2

EVOLIUMA925 Compact Transcoder

Program:

Situation and features

Functions




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S3:Transcoder descriptionSituation and features

EVOLIUM BSS

T

C Two generations of Transcoders:

TC G2 and Alcatel 925

MSC

OMC-R


PSTNBSC

T

C

BT

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bis

A-ter

A-ter

Gb

A



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The Transcoder provides:

Speech compression / expansion (16Kb/s 64Kb/s)

Data Rate adaptation

O&M control of the transmission function

The TC is usually located next to the MSC

The Sub-Multiplexer (SM) optimises the link

between BSC and TC

S3:Transcoder descriptionSituation and features

T

CBSC

16Kb/s 64Kb/s

SM SM



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S3:Transcoder descriptionFunctions

TC G2

Multiple CodecSupports Full Rate, Enhanced Full Rate and Half Rate

on a per call basis

Prepared for TFO and AMR

Scalable capacityUp to 18 A interface trunks with 3:1 submultiplexing

90 TCH per A-ter trunk between TC and BSC

Up to 24 A interface trunks with 4:1 submultiplexing

120 TCH per A-ter interface trunk

Equipment Practice

Based on the same practice as the EVOLIUM BSC

3 TRCUSM+3TRCU

SM+3TRCU SM+3TRCU

3 TRCUSM+3TRCU

SM+3TRCU SM+3TRCU



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S3:Transcoder descriptionFunctions

Alcatel 925 TC: New generation

Main Characteristics

High capacity (48 A-ter), multi-BSC, high compactness

Compatibility with EVOLIUM G2 TC

O&M improvements (central software downloading)

New Technical concept based on

A new board MT120 corresponds to 13 boards :

( ASMC + 4 ATBX + 8 DT16)

MT120 includes all transmission and processingfunctions and all interfaces required to support 120channels



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TC G2 and Alcatel 925 TC:

Comparison:One MT120 board (A925) replaces 13 boards (TC G2)

S3:Transcoder descriptionHardware configuration

A

S

M

C

DT16

ATBX

DT16 A

(64kb/s)A-ter mux

(16kb/s)x 4

One MT120

TRCU



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Full backwardscompatibility

with EVOLIUM G2Transcoder

S3:Transcoder descriptionHardware configuration

Compatibility with EVOLIUM G2 Transcoder

TC G2 Extension with MT120

With the same capacity as previously

up to 6 Ater multiplexed interfaces

MT120 put on ASMC slot

additional Fans module (TC G2 Fan)

01 03 05 07 09 11 13 15 17 19 21 23 25 27 29 31

DDTT1166

B

AT

X

ASMC

DDTT1166

DDTT1166

DDTT1166

DDTT1166

DDTT1166

B

AT

XB

AT

X

SM + 3 TRCU

SM + 3 TRCUSM + 3 TRCU

3 TRCU

3 TRCUSM + 3 TRCU

SM + 3 TRCU SM + 3 TRCU

MT 120 position in TC G2rack

TC G2 Fan position in TCG2 rack

S3:Transcoder description


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pExercice

Which rate adaptation makes the TC (between BSC

and MSC) ?

For the A925 TC, how many boards does oneMT120 replace ?

What are the Sub-Multiplexers used for ?

What is the interface between TC and MSC ?


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Session 4

EVOLIUMTMBase Transceiver Stationdescription

S4: BTS description


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S4:BTS descriptionObjective and program

Objective: To present the

A9100 BTS

A910 Micro BTS

EVOLIUMBTS Evolution.

Program for the different types of BTSs:


FunctionsHardware Configuration

S4: BTS description


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S4:BTS descriptionSituation and features

EVOLIUM BSS

B

TS

The Base Transceiver Station:

MSC

OMC-R


PSTNBSCTC

B

T

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bis

A-ter

A-ter

Gb

A

S4: BTS description


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The Base Transceiver Station:

Provides radio transmission, control and basebandfunctions for a cell

Supports the Air interface with the Mobiles

S S desc pt oSituation and features

B

T

S

S4:BTS description


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BTS situation: BTS

BTS

BTS

BTS

BTS

BTS

BTS

BTSBTS

BSC

Multipoint Configuration(Multidrop)

Star Configuration

Chain Configuration

Sectorised Configuration(only one station)

Star Configuration

Abis

Clock I/O

External alarms I/O

BTS Terminal

BTS

Antennas

Abis

Abis

Abis

MSUm

S4:BTS description


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Functions

The BTS performs the following functions under the

control of the BSC: Transmit and receive functions

Antenna diversity

Frequency hopping

Radio channel measurementsRadio frequency testing

The BTS includes the BIEs:

To Communicate with the BSC over the Abis Interface

BT

S

S4:BTS description


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pA9100:Situation and features

BTS A9100 Configurations :

Different combinations of the frequency band and number ofTREs in each sector: up to 12 TREs for a non sectored BTS

For each monoband configuration, both indoor and outdoorvariants are available

Multiband BTS, up to 6 sectors (3 GSM 900 + 3 GSM 1800)with 2 TREs each, including Dualband cellin B6

Air combining BTS (Antennas)

AC indoor

Indoor Unit (IDU) of microwave entity

Option: Range Extension Kit

S4:BTS description


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A9100: Situation and features

BTS A9100: Power according to the band

Variant Band (Mhz) Power (Watt) Output level (dBm)

TRGM 900 35 W 45,44dBm +/-0,5dB

TRDM 1800 37 W 45.69dBm +/-0,5dB

TRDH 1800 63,5 W 48,03dBm +/-0,75dB

TRPM 1900 35 W 45,44dBm +/-0,5dB

S4:BTS description


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A9100:Functions

SUM CLOCK

TR

A

N

S

TRE

OMU

BTS-TE

AN

Abis

Abis BTS - BSC Interface

SUM Station Unit Module

TRANS Transmission

Clock Clocks

OMU Operation and Maintenance Unit

TRE Transceiver equipment

AN Antenna Network

BTS-TE BTS TERMINAL ALSO CALLED

LMT (LOCAL MAINTENANCETERMINAL)

BTSA9100functional organisation:

S4:BTS description


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A9100:Hardware configuration

BTSA9100

Indoor

Top fan stage

Connection area

T

R

X

T

R

X

T

R

X

T

R

X

C

O

M

B

I

N

D

U

P

X

L

E

D

U

P

X

L

E

C

O

M

B

I

N

Dummy panel

T

R

X

T

R

X

T

R

X

T

R

X

Air inlet

Stand

Fan stage

Air inlet

S

U

M

D

U

P

X

L

E

C

O

M

B

I

N

Dummy panel

T

R

X

T

R

X

T

R

X

T

R

X

Fan stage

Fan stage

Air inlet

Air inlet

Stand

S

U

M

D

U

P

X

L

E

C

O

M

B

I

N

Dummy panel

T

R

X

T

R

X

T

R

X

T

R

X

Fan stage

Top fan stage

Connection area

92 cm

194 cm

IND medi

(3x4)

IND mini(omni 4TRX)

Sector 1

Sector 2Sector 3

* For an omni BTS 2 TRX the combiner is not used

* For a sectorised (2 x 2) 2 duplexers are used

S4:BTS description


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C

O

M

B

I

N

D

U

P

X

L

E

D

U

P

X

L

E

C

O

M

B

I

N

T

R

X

T

R

X

T

R

X

T

R

X

T

R

X

T

R

X

T

R

X

T

R

X

S

U

M

D

U

P

X

L

E

C

O

M

B

I

N

T

R

X

T

R

X

T

R

X

T

R

X

TransmissionPower-meterPower Distribution

Power-Supply

Batteries

AUXILIARY COMPARTMENT BTS COMPARTMENT

120 cm 60 cm

4 TRX + EXTENSION = 12 TRX

150 cm

MINIMEDI

BTSA9100Outdoor

S4:BTS description


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BTS A9100 Mini indoor 2x2 900 or 1800

1212

S

U

M ANX ANX

TRETRE TRE TRE

FAN. FAN. FAN.

AIR

TRE TRE

ANX

TRE TRE

ANX

S4:BTS description


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Range Rack Family Configuration900/1800 IND mini omni ...4 TRX

sectored ...2x2 TRXIND medi omni ...12 TRX

sectored ...2x6 TRXsectored ...3x4 TRXsectored ...4x2 TRX

OUT mini omni ...4 TRXsectored ...2x2 TRX

sectored 3x1 TRXOUT medi omni ...12 TRXsectored ...2x6 TRXsectored ...3x4 TRXsectored ...4x2 TRX


BTS A9100: Monoband Configurations

S4:BTS description


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Range RackFamily Configuration 900/1800Multiband IND mini ...2x2 ...2 / ...2900/1800 IND medi ...2x6 ...6 / ...6

...3x4 ...4 /...2x4

...2x4 / ...42x4 + 2x2 2x4 / 2x2(4sectors) 2x2 / 2x4(6sectors) 3x2 / 3x2

OUT mini ...2x2 ...2 / ...2OUT medi ...2x6 ...6 / ...6

...3x4 ...4 /...2x4...2x4 / ...4

2x4 + 2x2 2x4 / 2x2(4sectors) 2x2 /2x4(6sectors) 3x2/3x2

BTS A9100: Multiband BTS Configurations

S4:BTS description


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Range Rack Family Configuration

900/1800 IND mini 1x (...2/...2)IND medi 1x (...6/...6)

2x (...4/...2)

2x (...2/...4)1x (...2/...2)1x (...4/...4)3x (...2/...2)

OUT mini 1x (...2/...2)OUT medi 1x (...6/...6)

2x (...4/...2)2x (...2/...4)1x (...2/...2)1x (...4/...4)3x (...2/...2)


BTS A9100: Multiband Cell Configurations

S4:BTS description


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Micro Base Transceiver Station Alcatel 910

Main radio features:

GSM 900 and/or GSM 1800

Single-antenna or low-loss versionOmni, sectored

Dualband configurations

(including Dualband cell in B6)

A910:Situation and features

S4:BTS description


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pA910:Hardware configuration

BaseUnit

Slave

2 TRX

BaseUnit

Master

2 TRX

BaseUnit

Slave

2 TRX

Connection

box

Connection

box

Connection

box

Sitesupportcabinet

(optional)

Power Supply Abis

ExternalAlarms

Abis

ExternalAlarms

Power Supply

ExternalAlarms

Inter-Entity Bus

Power Supply Power Supply

Inter-Entity Bus

The Micro-BTS Alcatel 910consists of one up to 3 Basic Units

to build configurations from 2 up to 6 TRX

S4:BTS description


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Micro-BTS Alcatel 910

TRX1TRX1 TRX2TRX2

MSUMBCF level

TRX level

Antenna coupling level

Abis interface

MAN 1(single-antenna)

TRX1TRX1 TRX2TRX2

MSUM

Abis interface

MAN 2(low loss)

BCF Base station Control FunctionMSUM Micro-BTS Station Unit Module

TRX TransceiverMAN Micro-BTS Antenna Networks


S4:BTS description


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EVOLIUMBTS Evolution

New Station Unit Module: SUMA

New Antenna Network Module: ANC (D = 1800, G = 900)

New AC/DC Power Supply for indoor and outdoor cabinets: Power Module 1200W : PM12

Adapter Module: ADAMNew AC Switch Unit: ACSU

Optional Indoor Unit (IDU) of microwave entity associatedwith Outdoor Unit (ODU) fixed on the mast

SUMA and ANC usable in previous A9100 BTS versions

EVOLIUMBTS Evolution:Features

S4:BTS description


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EVOLIUMBTS Evolution:Hardware configuration

EVOLIUMBTS Evolution

Configurations with ANC board :

TX

RX

ANC

TRE1

TRE2

TRE3

TRE4

ANY

TRE5

TRE6

TRE7

TRE8

ANY

TRE1

ANC

TRE2

TRE1

TRE2

TRE3

TRE4

ANC

S4 :BTS descriptionE i


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Exercises

What is a BTS Medi?

For a BTS A9100, which board includes the BaseInterface Equipment ?

Gives different configurations types for severalBTSs on a BSC?

For a micro BTS, is it possible to have a dualbandconfiguration ?

When do you need to use the SUMA board?


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Session 5

EVOLIUMTMMFS Alcatel 935description

S5:MFS descriptionObj ti d


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Objective and program

Objective: To present the Multi-BSS Fast PacketServer, Alcatel 935 MFS.

Program:


Functions


MFS Configurations

S5:MFS descriptionSit ti d f t


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EVOLIUM BSS

A935

MFS

The Multi-BSS Fast Packet Server:

MSC

OMC-R


PSTNBSC TC

B

T

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bis

A-ter

A-ter

Gb

A

S5:MFS description


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Other MFS (MSCs)

BSCBTS

BTS

Other manufacturers

A

MSC


T

C

BTS BSC

BTS

BTS

Alcatel BSS

A

MSC


BSCT

C

GGSNIP GPRSBackbone

SGSNInternet

MFS

Interconnection with other manufacturers

S5:MFS description


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Functions

New System Element for GPRS

MFSMulti BSS Fast packet Server GPRS packet control unit functions (GSM 03.60

standard)

Radio Resource Management for GPRS for severalBSSs

Management of the interface with the GPRS corenetwork

SGSNServing GPRS Support Node

Mobile packet routing

Security and access control

Interface to the Home Location Register (HLR)

VLR for GPRS (MS location)

GGSNGateway GPRS Support Node

part of the GPRS core network

IP router, linked to one or several data networks

S5:MFS description


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CCU=Channel Codec UnitPCU= Packet Control Unit

= GPRS Signalling Link

CCU

CCU

CCU

CCU

BSC

BSC

BTS

BTS

Um

Abis

A-ter

MSCA

A-ter

Functions

A

SGSNGb

A-terMSC

PCU

PCU

MFSGb

Gb

TC

TC

The MFS within the BSS: Alcatel solution

GSL

S5:MFS description


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SGSN

BTS

MFSA935

TC MSC

: GPRS Traffic

: CS Traffic

FrameRelay

Functions

BSC

Position in the network / Interface routing

S5:MFS description


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FrameRelay

SGSN

BTS

MFSA935

TC MSC

:O&M

: Telecom

Functions

BSCRSL

GSL

OMC-RA1353RA

OML

(Gb)

(A-bis)

IMT

IP

X25

Flow of Signalling

S5:MFS descriptionFunctions


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Functions

A-ter Mux interface

CS traffic

GPRS traffic

CS traffic

GPRS traffic

MSC

GGSN

BTS

MSC

OMC-R

IMT = Installation & Maintenance Terminal

Ethernet Link

Ethernet Link

S

GS

N

T

C

B

S

C

MFS

Operation and Maintenance and interfaces

OMC-RIMT

CS : Circuit Switching

S5:MFS descriptionFunctions


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Functions

N7 signallinglink

O&Mtimeslots

GSL

CS(CIRCUIT

SWITCHED)

GPRS

Bearer ChannelNx64 Kbits

PVC

PVC

PVCPVCPVC

CICCICCIC

GICGICGIC

GIC

64 Kbits

64 Kbits

64 Kbits

64 Kbits

64 Kbits

Cros

s-connected

P

CM

TS

Transcoding

Ater-mux interface

Bearer ChannelMx64 Kbits

MFS

A-ter Mux

BSC-MFS

A-ter Mux

MFS - TC

Gb

InterfaceMFS-SGSN

S5:MFS descriptionHardware configuration


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Hardware configuration

Alcatel 935 MFS: Equipment View (1)

2208 mm

1000 mm

Server sub-rack

LAN sub-rack

Telecommunication

Sub-rack 1

Telecommunication

Sub-rack 0

Top Rack Unit

S5:MFS descriptionH d fi ti


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Alcatel 935 MFS: Equipment View (2)

The MFS is composed of :Up to 12 GPU (GPRS Packet Unit) per subrack (11 + 1).

One GPU corresponds to one BSC.The subrack is also composed of Converters,synchronisation (over Ater) and Ethernet connections.

Two DIGITAL DECalpha Servers (called AS800),which insure the configuration of the MFSand a remote connection.

Internal Hubs, used for Ethernet connections.

It is not mandatory that the MFSis fully equipped in GPUs.

Hardware configuration

S5:MFS descriptionMFS fi ti


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MFS configurations

JBETI

BE35B

BE35B

BE35B

Fan unit + 240PCM links

JBETI

BE35B

BE35B

BE35B

HubHub

JBETI

BE35B

BE35B

BE35B

+ 240PCM links

Mandatory :

- Internal cabling done- PCM of 1st subrack done- Back panel of 2nd subrack

Optional :- PCM of 2nd subrack- minimum kit

Up to 22 BSS (1GPU/BSS)

Extension element :- GPU until the 12th- from the 12th, add of

minimal kit

JBETI

BE35B

BE35B

BE35B

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

AS8004-Eth slot2PCL slotsDual SCSI

AS8004-Eth slot2PCL slotsDual SCSI

Fan unit

Terminal ServerHubHub

DC connection - Circuit breakers

ControlSubrack

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

JBGPU

Alcatel 935 MFS: Standard Pre-equipped Configuration

S5:MFS descriptionExercise


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Exercise

How many BSSs is it possible to connect to one MFS ?

Does only packet switched traffic go through the MFS ?

Does the MFS implement the GSM-defined PCUfunctions?

Does the A-ter and Gb interfaces carry the same type oftraffic ?

In the MFS, which board is associated with the BSC?


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Session 6

BSS Interfaces

S6:BSS InterfacesObjective and program


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Objective and program

Objective: To describe the BSS transmissioninterfaces.

Program:

Interface presentation

A, A-ter, A-ter mux interfaces

A-bis interface

S6:BSS InterfacesSituation


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Situation

EVOLIUM BSS

BSCT

C

A935

MFSB

TS

The BSS Interfaces:

MSC

OMC-R


PSTN

BSCT

C

B

T

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bis

A-ter

A-ter

Gb

A

S6:BSS InterfacesInterface presentation


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Packet data traffic

Circuit switched traffic

BTS

BTS

BTS

BSC TC

MSC

SGSN

A-bis

A-ter (mux) A-ter

Gb

A

OMC-R

MFS

Base Station Subsystem

BSS interfaces within GPRS



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A-bis Interface A-ter Interface A Interface

BTS Abis Trunk BSC Ater(mux) trunk TRCU A trunk

RSL SS7 to

MSC

OML X 25

Qmux Qmux

X.25 X.25 X.25

TSC to OMC_R

to OMC_R to OMC_R

Logical Links within the BSS

Logical links within the BSS



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Via PSDN

Co-located site

Dedicated links with X25 concentrator

Via A-interface / transcoder connection

Via A-interface / MSC connection (EVOLIUM

TM

Universal Routing)(now recommended as the standard solution):

OMC-R Site Co-located Router

MSC SiteBSC Site

BSC TC MSCA-ter A

OMC-R

BSS O&M PCM trunk

Semi-permanentconnections


OMC-R / BSC connection



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Collocated link

Non-collocated link

PSDN link

PCM link

Ethernet

Ethernet

EthernetEthernet

Hub

Ethernet

Ethernet

Hub

1

Modem

1

Router

1

Modem

2

Router

2

Hub

2X21 X21

Router1

Router2PSDN

Router1

Router2MSCMSC PCMPC

M

PCM

MFS OMC-R

Ethernet

Ethernet


OMC-R / MFS connection

S6:BSS InterfacesA A-ter A-ter Mux interfaces


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A, A-ter, A-ter Mux interfacesAter Interface A Interface

TRCU

The frame structure

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

0 Frame Synchro Frame Synchro

1 TCH1 CIC12 TCH2 CIC23 TCH3 CIC34 TCH4 CIC45 TCH5 CIC56 TCH6 CIC67 TCH7 CIC78 TCH8 Unused CIC89 TCH9 CIC9

10 TCH10 CIC1011 TCH11 CIC1112 TCH12 CIC1213 TCH13 CIC1314 TCH14 CIC1415 TCH15 CIC15

16 TCH16 SS7 CIC16 / SS7

17 TCH17 CIC1718 TCH18 CIC1819 TCH19 CIC1920 TCH20 CIC2021 TCH21 CIC2122 TCH22 CIC2223 TCH23 Unused CIC2324 TCH24 CIC2425 TCH25 CIC2526 TCH26 CIC2627 TCH27 CIC2728 TCH28 CIC2829 TCH29 CIC2930 TCH30 CIC3031 TCH31 CIC31

Relationship between the A and Ater Interfaces frame Structures

A and A-ter

S6:BSS InterfacesA A-ter A-ter Mux interfaces


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A, A-ter, A-ter Mux interfaces

A-ter and A-ter Mux 1 2 3 4 5 6 7 80 Frame Synchro1 TCH1/1 (*) TCH2/1 TCH3/1 TCH4/1

2TCH1/2 (*) TCH2/2 TCH3/2 TCH4/23 TCH1/3 (*) TCH2/3 TCH3/3 TCH4/3

4 TS0 info trib.1

5 TCH5/1 TCH6/1 TCH7/1 TCH8/1



8 TS0 info trib.2

9 TCH9/1 TCH10/1 TCH11/1 TCH12/1

10 TCH9/2 TCH10/2 TCH11/2 TCH12/2

11 TCH9/3 TCH10/3 TCH11/3 TCH12/3

12 TS0 info trib.3

13 TCH13/1 TCH14/1 TCH15/1 TCH16/1(**)14 TCH13/2 TCH14/2 TCH15/2 TCH16/2(**)

15 TCH13/3 TCH14/3 TCH15/3 TCH16/3(**)

16 X25 or Unused

17 TCH17/1 TCH18/1 TCH19/1 TCH20/1

18 TCH17/2 TCH18/2 TCH19/2 TCH20/2

19 TCH17/3 TCH18/3 TCH19/3 TCH20/3

20 SS7/1 or Unused

21 TCH21/1 TCH22/1 TCH23/1 TCH24/1

22 TCH21/2 TCH22/2 TCH23/2 TCH24/2

23 TCH21/3 TCH22/3 TCH23/3 TCH24/3

24 SS7/2 or Unused

25 TCH25/1 TCH26/1 TCH27/1 TCH28/1

26 TCH25/2 TCH26/2 TCH27/2 TCH28/2

27 TCH25/3 TCH26/3 TCH27/3 TCH28/3

28 SS7/3 or Unused

29 TCH29/1 TCH30/1 TCH31/1orQmux (***)

Unused

30 TCH29/2 TCH30/2 TCH31/2 (***) Unused

31 TCH29/3 TCH30/3 TCH31/3 (***) Unused

Ater mux Interface characteristics.

Ater Interface Ater mux Interface Tributary 1

Tributary 2 Multiplexer

Tributary 3

Tributary 4

S6:BSS InterfacesA-bis interfaces


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A-bis interfaces

A-bis interface frame structure

Q : Qmux bus (in TS1)

S, Ri are Service bit.

Frame structure example corresponding to:

Free Mapping,Ring Full Alcatel with 3 BTS,

BTS n 2 with 2 FU and RSL 64 kbit/s

BTS n 1 with 4 FU and RSL 16 kbit/s

BTS n 3 with 2 FU and RSL/OML 16 kbit/s

1 2 3 4 5 6 7 8

0 Frame Synchro

1 Q Q S S2 R1 R2 R3 R4 R5 R6 R7 R8

3 OML BTS 2

4 Radio Signalling Link FU1/2

5 2/1/1 2/1/2 2/1/3 2/1/4

6 2/1/5 2/1/6 2/1/7 2/1/8

7 Radio Signalling Link FU2/2

8 2/2/1 2/2/2 2/2/3 2/2/4

9 2/2/5 2/2/6 2/2/7 2/2/8

10 OML BTS 1

11 1/1/11 1/1/2 1/1/3 1/1/412 1/1/5 1/1/6 1/1/7 1/1/8

13 RSL FU1/1 RSL FU1/2 RSL FU1/3 RSL FU1/4

14 1/2/1 1/2/2 1/2/3 1/2/4

15 1/2/5 1/2/6 1/2/7 1/2/8

16 1/3/1 1/3/2 1/3/3 1/3/4

17 1/3/5 1/3/6 1/3/7 1/3/8

18 1/4/1 1/4/2 1/4/3 1/4/4

19 1/4/5 1/4/6 1/4/7 1/4/8

20 RSL FU3/1 3/1/2 3/1/3 3/1/4

21 3/1/5 3/1/6 3/1/7 3/1/822 RSL FU3/2+

OML BTS 33/2/2 3/2/3 3/2/4

23 3/2/5 3/2/6 3/2/7 3/2/8

24

25

26

27

28

29

30

31

Example of channel structure on the A-bis interface.



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Rule :

Multiplexing of the signalling links of the same BTS equipment:1 to 4 RSL + 1 OML on the same PCM Time Slot (64Kbit/s).

Hardware support: BSC G2, A9100 BTS, A910 BTS

Typically, on the same A-bis multidrop link:. 2 BTS with 4 TRX (FR) + 1 BTS with 5 TRX (FR). 6 A910 Micro-BTS (or A9100 BTS) with 2 TRX (FR)

A-bis Signalling Link Statistical Multiplexing

(or Statistiscal Multiplexing on 64 Kbit/s Channel)



101/132


Example of mapping: Multiplexed Channel Block 64/4:(1 BTS with 4 TRX)

4 RSL + 1 OML

RTS1 RTS2 RTS3

RTS5RTS4 RTS6 RTS7

RTS0

RTS1 RTS2 RTS3

RTS5RTS4 RTS6 RTS7

RTS1RTS0 RTS2 RTS3

RTS5RTS4 RTS6 RTS7

RTS1RTS0 RTS2 RTS3

RTS5RTS4 RTS6 RTS7

RTS0

Trafficfor1FU/TRE

Trafficfor1FU/TRE

Trafficfor

1FU/TRE

Trafficfor1FU/TRE

Signallingfor4FU/TRE +

O&M

9 TS used

A bis interfaces

A-bis Signalling Link Statistical Multiplexing



102/132


Rule :

Multiplexing RSL and OML on the same 16Kbit/s nibble

Use of empty nibbles (left free for BCCH and/or SDCCH use)for RSL and OML.

Typically:1 BTS with 2 TRX uses 4 TS instead of 57 A910 BTS with 2 TRX can be put on one A-bis multidrop link

A bis interfaces

A-bis Signalling Link 16 Kbit/s Statistical Multiplexing

(or Statistical Multiplexing on 16Kbit/s Channel)



103/132


Example of Mapping: Multiplexed Channel Block 2x16/1:(1 BTS with 2 TRX)

TCH TCH TCH

TCHTCH TCH TCH

TCH TCH TCH

TCHTCH TCH TCH

(RSL1)

(OML +RSL2)

BCCH

A-bis Signalling Link 16 Kbit/s Statistical Multiplexing

S6:BSS InterfacesExercices


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What is the Gb interface ?

Is it possible to have RSL and OML on the same TimeSlot over A-bis interface?

On one A-ter Mux, how many A-ter links aremultiplexed?

Does the GPRS traffic (data) go through the A-bisinterface?


105/132


Session 7

Operation and Maintenanceprinciples

S7:O&M principlesObjective and program


106/132


j p g

Objective: To identify the local and the networkOperation and Maintenance functions.

Program:

Operation and maintenance generality

BSS O&M terminal functions

OMC-R architecture

S7:O&M principlesOperation and maintenance generality


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EVOLIUM BSS

MSC

OMC-R

Operation and Maintenance Center-Radio:

MSC

OMC-R


PSTN

BSCT

C

B

T

S

B

T

S

MSC

HLR

GGSNSGSN

A935

MFS

A-bis

A-ter

A-ter

Gb

A



108/132


SGSN

GGSN

OMC-G

OMC-S MSC/VLRHLR

NMCQ3

A935 MFS

BSS

OMC-R

BSS

A Consistent Approach



109/132


The OMC-R supervises several BSSs:

Manages the BSSs software versionsStores the BSSs configurations

Manages fault and performance measurement reports

Handles supervision of alarms and events

O&M functions:



Alarm Management

MSC

OMC-R

The Way we do GPRS O&M:A 353 RA , the new OMC-R



110/132



BSS B5 BSS B6.2 MFS

BSC G1 BSC G2BSC G2

MFS

Migrat ion w ith

CMA B6.2

On-line

Extension

Reduct ion

IMT termin al

p g y

Optim ized SW

Replacement

Massive

Log ical Update

SWLogica

lHW

General Organization



111/132


p g y

GPRS management used

Higher Capacity, Scalability & Robustness3500 cells, 8000 TRX

Seamless Network Operations

HW on-line extension for TRX plug and play

Massive logical configuration update to manage parametersglobally

Powerful fault management

BSS Software migration with minimum outage

Integration in the Alcatel Network Management StrategyCompliant to standards, Open interfaces, Common look & feel

S7:O&M principlesBSS O&M terminal functions


112/132


BSS Equipment Supervision View:

BSC 1

X25

DISCOperations

States

Alarm synthesis

Administrative

and Operationalstateseen either byicon or at thebottom of thescreen

S7:O&M principlesBSS O&M terminal functions


113/132


Alarm

Surveillance

view

Alarms ofall MOs of all

BSSs

All cells of all BSSs

Radio Main View

HW equipment view

equipmentrackshelfboard

Functional view

TRECUFU

RSL

BSS-2 Equipment Main View

BSS-1 Equipment Main View

NAVIGATION

NAVIGATION

Human Machine Interface

NAVIGATION

Fault Management: Network Supervision

S7:O&M principlesOMC-R architecture


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External Interfaces



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0 20 40 60 80 100

Nb of BSC equivalent

XLRG_HOST

LRG2_HOST

LRG1_HOST

MEDIUM_HOST

SML_HOST250 cells - 750 TRX - 10 BSC eq

500 cells - 1500 TRX - 20 BSC eq

900 cells - 3600 TRX - 30 BSC eq

1200 cells - 3600 TRX - 40 BSC eq

3500 cells - 8000 TRX - 100 BSC eq

BSS equivalent rule:

1 BSC eq = 1 BSC G2 or 1 BSC G2 = 1 BSC eq= 1.5 BSC G1 1 BSC G1 = 2/3 BSC eq= 1/2 MFS 1 MFS = 2 BSC eq

Alcatel 1353 RA Dimensioning rules



116/132


Alcatel 1353 RA on-line HW Extension

Auto-detection of BTS HW BTS capabilities to poll its HW configuration are used

Plug-in of new boards can be detected by the BTS

BTS informs BSC on new BTS HW components

BSC synchronizes its database and the OMC-R

Autonomous resource allocation by the BSC

BSC performs automatically:

Calculation of TRX / TCU mapping

Calculation of Abis TS allocation for OML, TRX and RSLbased onAbis free mappingallocation rules

Programming of transmission boards by BSC and BTS



117/132


HW notification

T

R

XDummy panel

Fan stage

T

R

X

T

R

X

T

R

X

S

U

M

DUP

LEX

COM

BIN

T

R

X

No manual operator definitions/inputs needed

S7:O&M principlesExercise
http://localhost/var/www/apps/conversion/tmp/scratch_10/close.htm


118/132


For the MFS, which Operation and MaintenanceCenter do you need ?

What are the most important functions forOMC-R ?

Can the BSS perform on-line hardware extension?What does that mean ?

For a Medium-Host, how many maximum cells are

possible ?

ANNEXES


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Annex A: GPRS presentation

Annex B: Documentation

ANNEXESAnnex A: GPRS definition


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Purpose of General Packet Radio Service:

The GPRS allows the service subscriber to send and receive datainan end to end packet transfermode, without utilizing networkresources in circuit-switched mode

It allows a charging based on data volume (resources really used)

It also benefits the network operator who may then usescarce radioresources more efficientlyby sharing these resources

GPRS provides packet mode transfer of data for applications that

exhibit one or more of the following characteristics: Intermittent, non periodic (i.e. bursty) data transmission

frequent transmission of small volumes of data

infrequent transmission of larger volumes of data



121/132


GSMNetwork

Internet

Air InterfaceAccess

Node

Circuit Switching on air interface (GSM)

General Packet Radio Service (GPRS): principles



122/132


Data Network

Cellular networkwith GPRS backbone

$2$

Air Interface

Packet Switching on air interface

General Packet Radio Service (GPRS): principles



123/132


Alcatel Solution principles

Smooth and cost effective introduction of GPRS in the BSS byminimizingthe hardware modificationneeded to the alreadyinstalled network elements

Only software upgradeis needed on the installed BTS, BSCand OMC-R

GPRS functions are introduced in one network element calledAlcatel 935 MFS (Multi-BSS Fast packet Server), one centralentity which controls several BSS and supports the GPRSspecific functions:

Packet Control Unit (PCU) function

Standard Gb Interface protocol stack

Maximumusage of the existing transmission resources

ANNEXESAnnex B: Documentation


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Documentation tree:

Network Modification Handbook

Surveillance handbook Configuration handbook

Field method handbook

Right to use required

ANNEXESAnnex B: Documentation


125/132


Topics

Safety Rules and Precautions

How to Use This Handbook

Network Modifications

Adding/Deleting a BTS

Adding/Deleting/Modifying

an A935 MFS

Replacing a BTS

Moving a BTS

Moving an Abis Link

Moving BSS Components

Add A935 MFS

Grouped Task Sequence

Prerequisites

Scheduling

Site-specific Information

Restrictions

Telecom/Supervision Outage

Tools

Supplies

Applicable Documents

ANNEXESAnnex B: DocumentationExample: Add BTS


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BSS GLOSSARYAbbreviations and Acronyms


127/132


AMR Advanced Multi Rate (TC)

AN Antenna Network (BTS)

AS Access Switch (BSC)AS Alarm Surveillance (O&M)

ASMA A-ter Submultiplexer A

ASMB A-ter Submultiplexer B

BC Broadcast

BCU Broadcast Unit

BCLA BSC Clock A

BCR Broadcast Register

BCU Broadcast Unit

BCCH Broadcast Common Control Channel(GSM TS)

BCF Base station Control Function (BTS)

BG Border Gate (GPRS)

BIE Base Station Interface EquipmentBIEC Base Station Interface Equipment (BSC)

BIUA Base Station Interface Unit A

BPA Back Panel Assembly

BSC Base Station Controller

BSS Base Station (sub)System

BSSGP Base Station System GPRS Protocol(GPRS)

BTS Base Transceiver Station

CAE Customer Application Engineering

CAL Current Alarm List (O&M)

CBC Cell Broadcast Center

CBCH Cell Broadcast Channel (GSM TS)

CBE Cell Broadcast Entity

CCCH Common Control Channel (GSM TS)

CCU Channel Coding Unit

CDMA Code Division Multiple Access

CE Control Element (BSC)

CEK Control Element Kernel

CLK Clock

CLSI Custom Large Scale Integrated circuitCMA Configuration Management Application

CMDA Common Memory Disk A

CMFA Common Memory Flash A



128/132


CPR Common Processor (Type: CPRA, CPRC)

CRC Cyclic Redundancy Check

CS Circuit Switching (Telecom)CS Coding Scheme (GPRS):

CS-1, CS-2, CS-3, CS-4

CU Carrier Unit (BTS)

DCE Data Circuit Terminating Equipment

DL DownLink

DLS Data Load Segment

DMA Direct Memory Access

DRFU Dual Rate Frame Unit

DRX Discontinuous Reception (GSM TS)

DSE Digital Switching Element

DSN Digital Switching Network

DTX Discontinuous Transmission (GSM TS)

DTC Digital Trunk Controller(Type: DTCA, DTCC)

DTE Data Terminal Equipment

EDGE Enhanced Data rates for GSM Evolution

EI Extension interface

EML Element Management Level

EPROM Erasable Programmable Read Onl Memory

FPE Functional and Protective Earth

FR Full Rate (GSM TS)

FR Frame Relay (Telecom)

FRDN Frame Relay Data Network (Telecom)

FU Frame Unit (BTS)

FW Firmware

GGSN Gateway GPRS Support Node (GPRS)

GMM GPRS Mobility Management (GPRS)

GPRS General Packet Radio Service

GPU GPRS Packet Unit

GS-1 Group Switch of stage 1 (BSC)

GS-2 Group Switch of stage 2 (BSC)GSL GPRS Signalling Link

GSM Global System for Mobile Communications

GSM TS GSM Technical Specification



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HAL Historical Alarm List (O&M)

HDSL High rate Digital Subscriber Line

HDLC High Level Datalink ControlHLR Home Location Register

HMI Human Machine Interface

HO HandOver

HR Half Rate

HW Hardware

IDR Internal Directed Retry

ILCS ISDN Link Controller

IMT Installation and Maintenance Terminal(MFS)

IND Indoor (BTS)

IP Internet Protocol

ISDN Integrated Services Data Network

IT Intelligent TerminalLA Location Area (GSM TS)

LAC Location Area Code (GSM TS)

LAN Local Area Network

LED Light Emitting Diode

LLC Logical Link Control (GPRS)MA Mobile Allocation (GSM TS)

MAC Medium Access Control (GPRS)

MAN MicroBTS Antenna Network (BTS)

MCB Multiplex Channel Block

MFS Multi-BSS Fast Packet Server (GPRS)

MLU Massive Logical Update

MMI Man Machine Interface

MMM (3M) Maximum Multiband Mobile Control

MO Managed Object (O&M)

MS Mobile Station

MSC Mobile Switching Center

MSUM MicroBTS Station Unit Module (BTS)

NMI Non Maskable InterruptNPA Network Performance Analyser

NSS Network SubSystem

NTL Network Termination Line



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NW Network

OBC On Board Controller

OBCI On Board Controller InterfaceODMC On Demand Measurement Campaign

(O&M)

O&M Operation and Maintenance

OMC Operation and Maintenance Center

OMC-R Operation and Maintenance Center -Radio

OML Operation and Maintenance LinkOMU Operation and Maintenance Unit (BTS)

OS Operating System

OUT Outdoor (BTS)

PBA Printed Board Assembly

PBCCH Packet Broadcast Common Control

CHannel (GPRS)PC Personal Computer

PCCCH Packet Common Control Channel(GPRS)

PCH Paging CHannel (GSM TS)

PCM Pulse Coded Modulation

PCU Packet Control Unit (GPRS)

PDCH Packet Data CHannelPDN Packet Data Network (Telecom)

PLL Phase Locked Loop

PMA Prompt Maintenance Alarm (O&M)

PMC Permanent Measurement Campaign

(O&M)

PPCH Packet Paging CHannel (GPRS)

PRACH Packet Random Access CHannel (GPRS)

PRC Provisioning Radio Configuration (O&M)

PSDN Packet Switching Data Network

(Telecom)

PSTN Public Switching Telephone Network(Telecom)

PTP-CNLS Point To Point CoNnectionLeSs dat transfer (GPRS)

QoS Quality of Service

RA Radio Access



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RACH Random Access CHannel (GSM TS)

RAM Random Access Memory

RLC Radio Link Control (GPRS)RLP Radio Link Protocol (GSM TS)

RML Radio Management Level

RNO Radio Network Optimisation

RNP Radio Network Planning

RSL Radio Signalling Link

RTS Radio Time Slot

RxLev Received Level

RxQual Received Quality

SACCH Slow Associated Control Channel(GSM TS)

SAU Subrack assembly unit (BSC)

SC Supervised Configuration (O&M)

SCC Serial Communication ControllerSCCP Signalling Connection Control Part

SCSI Small Computer Systems Interface

SDCCH Standalone Dedicated Control Channel(GSM TS)

SGSN Serving GPRS Support Node (GPRS)

SIEA SCSI Interface Extension A

SM Submultiplexer

SMS Short Message Service

SMS-CB Short Message Service - Cell Broadcast

SRAM Static RAM

SRS SubRate Switch

SS7 Signalling System ITU-T N7 (ex CCITT)

SSD Solid State Disk

SW Software

SWEL Switch Element

TBF Temporary Block Flow (GPRS)

TC Transcoder

TCC Trunk Controller ChipTCH Traffic CHannel (GSM TS)

TCIL TransCoder Internal Link

TCSM TransCoder / SubMultiplexer equipment



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TCU TRX Control Unit (Type: TCUA, TCUC)

TDMA Time Division Multiple Access

TFO Tandem Free Operation (TC)TLD Top Level Design

TMN Telecommunication ManagementNetwork

TRAC Trunk Access Circuit

TRAU Transcoder and Rate Adapter Unit

TRCU Transcoder Unit

TRE Transceiver Equipment

TRS Technical Requirement Specification

TRU Top Rack Unit

TRX Transceiver

TS Time Slot

TS Technical Specification (GSM TS)

TSS Time Space SwitchTSCA Transmission Sub-System Controller A

(BSC)

TU Terminal Unit (BSC)

UL UpLink

UMTS Universal Mobile Transmission SystemVLR Visitor Location Register

VSWR Voltage Standing Wave Ratio (BTS)

WAN Wide Area Network

WAP Wireless Application Protocol

EVOLIUM Base Station Subsystem Description

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