gsm training for professionals

GSM Training for Professionals

TOPICS Module-1 Introduction of Communication and Wireless Concepts

History of Communication Telecommunication Basics Frequency, Range of Wireless Frequency Channel Concept Multiple Access Concepts and its types

Module-2 Cellular Generation Wireless Concepts

1st Generation of Cellular Communication (AMPS, TACS) 2nd Generation of TDMA , GSM 3rd Generation WCDMA 4th Generation LTE

Module-3 GSM Architecture

MS BSS NSS Interfaces, Protocols

TOPICS Module-4 GSM Channel Concepts

GSM Channels Physical and Logical Channels

Module-5 Cell Planning Concepts

Cell Planning Basic Cell Planning Tools , TEMPS

Module-6 NSS/BSS Hardware and Software

MSC HLR STP BSC

Module-7 DATA Calls

HSCSD GPRS Data Call Path, SGSN and GGSN Hardware

TOPICS Module-8 Call paths

Postpaid to Paid calls Postpaid to Prepaid calls Operator to Operator Calls Mobile to PTCL calls

Module-9 Mobile Packet Backbone Network

OSI layer IP Fundamentals IP Routing , Protocols MPLS Requirement in Telecom

Module-10 GSM Evolution Path

GSM Towards LTE LTE Architecture S-GWS, MME, eNode

Wireless Access Evolution

New ServicesNew Services EfficiencyEfficiency More Data More Data

Services Services requiredrequired

Broadband

Subscribers

Voice

CoverageCoverage MobilityMobility

Voice QualityVoice Quality PortabilityPortability CapacityCapacity Data ServiceData Service

BroadbandBroadband Network Network

SimplificationSimplification Cost of Cost of

OwnershipOwnership

Secrete of Upgrade Maximize

Utilization Spectrum Efficiency FDMA/TDMA/CDMA/OFDMA Power Efficiency----------------Battery

Minimize

Complexity------- System should be Simple, Cost--------- It should be minimize , as per customer needs

GSM Architecture Overview Main components of GSM

The mobile station (MS) BSS Base Station Subsystem (BTS+BSC) MSS Mobile Station Subsystem (MSC/HLR, ..)

BSCBTS MSC

Network Overview

BTS

BSC

MSC

VLR HLR AuC EIR

PSTN,ISDN...

OMCOMC

NMC X.25 linksGSM interfaces

Voicemail Server

SM-SC

MS (Mobile Station)

BSS (Base Station System)

NSS (Network Switching Subsystem)

OMM (Operations & Maintenance Management)

MS

RAN department

RF department

NSS department

Transmission department

Services offered

Voice ServicesData Services (GPRS/MMS)Short Code Services

GSM Voice Network

Only Voice Call

GSM Voice and Data Call Architecture

Voice Calls Path

Data Calls Path

Packet Data14.4 Kp/s

GSM Prepaid Services

BSC HLR

MSC SMSC

EIR

PrePaidPrePaid

VMSVoicemail

OMOPSTNFixed Network

SMSC

Short Code Services

Cell Planning (RF)

Two Key technologies are evolving to meet the Wireless Broadband Requirements

802.11n(smart antennas)802.11Mesh extns.

Loca

l Are

aFi

xed

Wid

e A

rea

Mob

ile

Cov

erag

e/M

obili

tyM

etro

Are

aN

omad

ic

802.16(Fixed LOS)

802.16a/d(Fixed NLOS)

802.11b/a/g

Mobile Industry

Fixed Wireless Industry

4G Air Interfaces

Data Rates (kbps)100,000 +

GSM UMTS HSPAGPRS EDGE LTE 3GPP

MOBILE BROADBAND

DSL ExperienceDial Up

Higher Data Rate / Lower Cost per Bit

802.16e(Mobile WIMAX)

Fibre Experience

Converge Networks

GSM Call GSM Call SetupSetup

MS Mobile Station = phone + SIM card

BTS Base Transceiver Station BSC Base Station Controller HLR Home Location Register MSC Mobile services Switching

Centre VLR Visitor Location Register AUC Authentication Centre

Stand-alone or integrated in HLR

EIR Equipment Identity RegisterFor blacklisting stolen and

unwanted equipment SMSC Short Message Service

”Support” Centre VMS Voice Messaging System PrePaid Node Hosting prepaid service

system IN Intelligent Network services PSTN Public Switched Telephone

Network PABX Private Automatic Branch

Exchange

MSC/VLRWarid

Telenore

BSC

SMSC

EIR

INTERNET

MobilinkPSTN

BSC

PrePaidNode

VMS

HLR

MSCw

AUC

MSC SMSC

EIR

INTERNET

PABXPSTNInternational

PSTNFixed Network

BSC

IN

PrePaid

VMSVoicemail

HLR

MSC BSC

MSC SMSC

EIR

INTERNET

BSC

IN

PrePaid

VMSVoicemail

HLR

MSC BSC

PABXPSTNInternational

PSTNFixed Network

MSC SMSC

EIR

INTERNET

BSC

IN

PrePaid

VMSVoicemail

HLR

MSC BSC

PABXPSTNInternational

PSTNFixed Network

MSC SMSC

EIR

INTERNET

BSC

IN

PrePaid

VMSVoicemail

HLR

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSCBSC

Base Station ControllerBase Station Controller

The call request reaches the BSC from the The call request reaches the BSC from the BTS and is forwarded to MSC.BTS and is forwarded to MSC.

After call is established, the BSC will perform After call is established, the BSC will perform decodingdecoding of the call (in typical config.) of the call (in typical config.)

BSC HLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSC HLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSC HLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

Checks A number.Checks A number. To whom is A subscriber calling?To whom is A subscriber calling?

(Checks B number)(Checks B number) Example : A subscriberExample : A subscriber has has

prepaid number.prepaid number.

MSC MSC

Mobile Switching CentreMobile Switching Centre

BSC HLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSC HLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSC HLR

MSC SMSC

EIR

INTERNETIN

PrePaidPrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

Does the A subscriber have Does the A subscriber have money left on his/her account?money left on his/her account?

When the call is established When the call is established and on-going the subscriber’s and on-going the subscriber’s account is decremented account is decremented accordingly.accordingly.

PrePaid NodePrePaid Node

BSCHLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSCHLR

MSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

BSCHLR

MSCMSC SMSC

EIR

INTERNETIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

Where is the B subscriber?Where is the B subscriber? MSC interrogates in HLR.MSC interrogates in HLR.

(HLR = Home Location (HLR = Home Location Register)Register)

MSCMSC Mobile Switching CentreMobile Switching Centre

BSCHLR

MSCMSCIN

PrePaid

VMSVoicemail

MSC BSC

PABXPSTNInternational

PSTNFixed Network

SMSC

EIR

INTERNET

BSCHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

HLR says ’I am the home of the B HLR says ’I am the home of the B subscriber and I know where he/she is subscriber and I know where he/she is right now’ (i.e. which VLR)right now’ (i.e. which VLR)

Tells this VLR ’Give me a visitor address Tells this VLR ’Give me a visitor address for this subscriber’ (Roaming Number) for this subscriber’ (Roaming Number)

HLRHLRHome Location Register

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSCMSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

Hosting MSC/VLR returns Hosting MSC/VLR returns TEMPORARILY assigned visitor/roaming TEMPORARILY assigned visitor/roaming address for B-subscriber to HLR.address for B-subscriber to HLR.

MSCMSC

Mobile Switching CentreMobile Switching Centre

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

’’Thanks for the visitor address!’Thanks for the visitor address!’ ’’I will send this address to the I will send this address to the

MSC that requested for it.’ MSC that requested for it.’

HLRHLRHome Location Register

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

’’Thank you, HLR!’Thank you, HLR!’ Speech connection path will set Speech connection path will set

up now towards the MSC/VLR up now towards the MSC/VLR where the B subscriber is where the B subscriber is presently located.presently located.

MSCMSC

Mobile Switching CentreMobile Switching Centre

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

Sets up a speech connection towards Sets up a speech connection towards BSC.BSC.

Delivers B-subscriber ID to BSC and asks Delivers B-subscriber ID to BSC and asks to page for the subscriber using that ID.to page for the subscriber using that ID.

MSCMSC

Mobile Switching CentreMobile Switching Centre

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

BSC now sends a PAGING MESSAGE to all the BTSs that it BSC now sends a PAGING MESSAGE to all the BTSs that it covers/controls.covers/controls.

Carrys PAGING RESPONSE from called MS back to MSC.Carrys PAGING RESPONSE from called MS back to MSC. Allocates a RADIO channel through a BTS with best Allocates a RADIO channel through a BTS with best

available and allowable SIGNAL STRENGTH for called MS.available and allowable SIGNAL STRENGTH for called MS. Performs SPEECH CODING when call is established.Performs SPEECH CODING when call is established.

BSCBSC

Base Station ControllerBase Station Controller

BSCHLRHLR

MSCMSC

MSC BSC

PABXPSTNInternational

PSTNFixed Network

IN

PrePaid

VMSVoicemail

SMSC

EIR

INTERNET

Thank You