Презентация на тему 2G and 3G overview

Look at the abbreviations commonly used.

Discuss skill sets for

2G and 3G overview

also known as GSM
GSM stands for Global System for

2G and 3G overview

- Base Transceiver Station.
BSC - Base Station Controller.
2G

Base Station Subsystem
MS- Mobile Station
BSC -Base Station Controller
2G and

speech to a digital format and transmits this to

Receives radio waves from the BTS and converts the digital format
to speech.

Monitors the quality and level of the radio waves from the BTS, and
reports these back, so the BSC can decide if the MS needs to receive
from another BTS.

Encrypts the radio signals, so the call cannot be listened to by
people with scanners.

2G and 3G overview

waves and converts them to another digital
format, to transmit

Takes the digital signals from the BSC and converts them to
radio waves, which are transmitted to the MS.

Monitors quality and levels of the radio waves and reports
to the BSC, so the BSC can decide if the MS needs to receive
from another BTS.

Holds configuration and software for itself.

Reports alarms back to BSC

Has an interface for staff to configure the BTS and monitor it.

2G and 3G overview

receives calls for all its BTS’s back to the

Monitors the levels and quality of all the BTS and MS reports,
and controls the handovers of all the MS in it’s area.

Holds configuration and software for itself, and all the BTS's
attached to it. It also holds backups of these.

Takes alarms for itself and all the BTS's attached to it and passes
them to the monitoring systems.

Takes the performance data of itself and all the BTS's attached
to it and passes this back to the monitoring system.

Provides an interface where staff can change the configuration
software and features of the BSC and the BTS’s.

2G and 3G overview

Support
Node
MS
MS
2G and 3G overview

SGSN- Serving GPRS Support
Node
MS
MS
BTS-

BSS – Base Station Subsystem

MS- Mobile Station

BSC -Base Station Controller

2G and 3G overview

overview

Serving GPRS support Node
GGSN-
Gateway GPRS Support Node
VLR-
HLR-
Visitor Location Register
Home

AUT-

EIR-

Authentication Centre

Equipment Identity Register

CG-

Charging Gateway

2G and 3G overview

Core-
Packet Switched Core.
Data- Web or Email.
HLR,VLR,AUT,EIR-
Databases for call setup.
CG-
Charging

2G and 3G overview

limited information about the BSC's and BTS's attached
to it.

Translates the dialled numbers and routes them to the
correct GMSC or other switch.

Controls part of call setup, contacts HLR and controls
handovers when other Macs are involved

Passes alarms for itself back to the monitoring system.

Passes performance data for itself back to monitoring system

VLR- Visitor Location Register -

Database for MS in MSC area with information about what
feature those MS’s have.

GMSC- Gateway MSC -

Connects network to other providers systems. Translates
dialled digits if required.

Generates charging data and passes this to CG.

2G and 3G overview

-
Controls and keeps track of those MS using

Generates charging data and passes it to the CG

GGSN-Gateway GPRS Support Node-

Acts as a router between the mobile network and other
networks such as the internet.

Performs routing of data packets to correct SGSN and MS
allowing MS to move between SGSNs.

Converts addresses used in the mobile network to those
used outside and vice versa

Reports alarms and performance back to monitoring
system.

Reports alarms and performance back to monitoring
system.

Stores it’s own configuration and backups.

Has own configuration and backups.

Has interface for staff to monitor and configure node.

Has interface for staff to monitor and configure node.

2G and 3G overview

Database of MS and the features and functions they
poses.
Database

Stores it’s own configuration and backups.

Has interface for staff to monitor and configure node.

AUT- Authentication Centre -

With MS encrypts the radio interface

Stores it’s own configuration and backups.

Has interface for staff to monitor and configure node.

EIR- Equipment Identity Register -

Holds the white, grey and black list for Mobile Stations

CH- Charging Gateway -

Provides interface to billing platforms with backup
for records.

2G and 3G overview

_ _ _ _ _ _ _ _

GMSC -

_ _ _ _ _ _ MSC

SGSN- S_ _ _ _ _ _ _ _ _ _ Support Node

GGSN-

G _ _ _ _ _ _ _ _ _ _ Support Node

VLR-

HLR-

V_ _ _ _ _ _ Location Register

H_ _ _ Location Register

AUT-

EIR-

A_ _ _ _ _ _ _ _ _ _ _ Centre

Equipment _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

CG-

C_ _ _ _ _ _ _Gateway

2G and 3G overview

Serving GPRS support Node
GGSN-
Gateway GPRS Support Node
VLR-
HLR-
Visitor Location Register
Home

AUT-

EIR-

Authentication Centre

Equipment Identity Register

CG-

Charging Gateway

2G and 3G overview

backup
2G and 3G overview

3G overview

– Operating systems
Software – Applications and tools
-Users
-Administrators
-Administrators
2G and 3G

data rates.
Uses different equipment from 2G in the radio

Maybe be the same or different manufacturer to existing 2G.

Can be a 3G only network, for example “3” in the UK.

Universal Mobile Terrestrial System.

Designed so calls can be handed between 2G and 3G when needed.

2G and 3G overview

Equipment
RNC –Radio Network Controller
2G and 3G overview

phone, PDA, credit card machine etc.
BSS has become RAN-

Radio Access Network

BSC has become RNC-

Radio Network Controller

BTS has become WBTS-

Wideband Base Transceiver Station

2G and 3G overview

switching
MSS- changes dialled digits and
controls switching.
MGW- Converts

Release 99 or R99, first release of 3G.

MSC- changes dialled digits and
controls switching.

MGW- Converts 3G coding of speech
and data to older methods

MGW-

Media Gateway

NSS- CS Core

RAN

2G and 3G overview

Serving GPRS support Node
GGSN-
Gateway GPRS Support Node
VLR-
HLR-
Visitor Location Register
Home

AUT-

EIR-

Authentication Centre

Equipment Identity Register

CG-

Charging Gateway

MGW

MGW-

Media Gateway

2G and 3G overview