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SK Ahsan
Introduction

   History

   Services

    Applications

  Specifications

Future



                   SK Ahsan
SK Ahsan
GSM Stands for Global System for Mobile
Communication

It is a second generation cellular standard
developed to cater voice services and data
delivery using digital modulation.



                                              SK Ahsan
SK Ahsan
GSM Developed by Group Special Mobile (founded
1982) which was an initiative of CEPT (Conference of
European Post and Telecommunication).

Aim : to replace the incompatible analog system

Presently the responsibility of GSM standardization
resides with special mobile group under ETSI (
European telecommunication Standards Institute )

Full set of specifications phase-I became available in
1990 .

Under ETSI, GSM is named as “ Global System for
Mobile communication”.
                                              SK Ahsan
Today Many Providers all over the world
            using GSM.

 GSM is used by over 3 billion people
  across more than 212 countries.

There are 40 million Subscribers of GSM
         are there in Pakistan.


                                    SK Ahsan
SK Ahsan
SK Ahsan
• Telecommunication services that enable voice
  communication via mobile phones
• Offered services
- Mobile telephony
- Emergency calling




                                        SK Ahsan
Include various data services for information
  transfer between GSM and other networks
  like PSTN, ISDN etc at rates from 300 to 9600
  bps
 Short Message Service (SMS)
up to 160 character alphanumeric data
 transmission to/from the mobile terminal
Unified Messaging Services(UMS)
Group 3 fax
Voice mailbox
Electronic mail
                                           SK Ahsan
Call related services :
Call Waiting- Notification of an incoming call while on the
 handset
Call Hold- Put a caller on hold to take another call
Call Barring- All calls, outgoing calls, or incoming calls
Call Forwarding- Calls can be sent to various numbers
 defined by the user
Multi Party Call Conferencing - Link multiple calls
 together
CLIP – Caller line identification presentation
CLIR – Caller line identification restriction       SK Ahsan
Carrier Separation : 200 Khz
Duplex Distance     : 45 Mhz
No. of RF carriers : 124
Access Method       : TDMA/FDMA
Modulation Method : GMSK
Modulation data rate: 270.833 Kbps

                             SK Ahsan
SK Ahsan
Mobile telephony
 GSM-R
Telemetry System
 Fleet management
 Automatic meter reading
 Toll Collection
 Remote control and fault Reporting
 of DG sets
 Value Added Services

                                       SK Ahsan
SK Ahsan
 Capacity increases
 Reduced RF transmission power and longer
  battery life
 International roaming capability
 Better security against fraud (through terminal
  validation and user authentication).
 Encryption capability for information security
  and privacy.
 Compatibility with ISDN,leading to wider range
  of services


                                            SK Ahsan
SK Ahsan
2nd Generation
 GSM -9.6 Kbps (data rate)


2.5 Generation ( Future of GSM)
 HSCSD (High Speed circuit Switched data)
 Data rate : 76.8 Kbps (9.6 x 8 kbps)


GPRS (General Packet Radio service)
 Data rate: 14.4 - 115.2 Kbps


EDGE (Enhanced data rate for GSM Evolution)
 Data rate: 547.2 Kbps (max)


3rd Generation
 WCDMA(Wide band CDMA)
 Data rate : 0.348 – 2.0 Mbps
                                            SK Ahsan
SK Ahsan

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Gsm

  • 2. Introduction History Services Applications Specifications Future SK Ahsan
  • 4. GSM Stands for Global System for Mobile Communication It is a second generation cellular standard developed to cater voice services and data delivery using digital modulation. SK Ahsan
  • 6. GSM Developed by Group Special Mobile (founded 1982) which was an initiative of CEPT (Conference of European Post and Telecommunication). Aim : to replace the incompatible analog system Presently the responsibility of GSM standardization resides with special mobile group under ETSI ( European telecommunication Standards Institute ) Full set of specifications phase-I became available in 1990 . Under ETSI, GSM is named as “ Global System for Mobile communication”. SK Ahsan
  • 7. Today Many Providers all over the world using GSM. GSM is used by over 3 billion people across more than 212 countries. There are 40 million Subscribers of GSM are there in Pakistan. SK Ahsan
  • 10. • Telecommunication services that enable voice communication via mobile phones • Offered services - Mobile telephony - Emergency calling SK Ahsan
  • 11. Include various data services for information transfer between GSM and other networks like PSTN, ISDN etc at rates from 300 to 9600 bps  Short Message Service (SMS) up to 160 character alphanumeric data transmission to/from the mobile terminal Unified Messaging Services(UMS) Group 3 fax Voice mailbox Electronic mail SK Ahsan
  • 12. Call related services : Call Waiting- Notification of an incoming call while on the handset Call Hold- Put a caller on hold to take another call Call Barring- All calls, outgoing calls, or incoming calls Call Forwarding- Calls can be sent to various numbers defined by the user Multi Party Call Conferencing - Link multiple calls together CLIP – Caller line identification presentation CLIR – Caller line identification restriction SK Ahsan
  • 13. Carrier Separation : 200 Khz Duplex Distance : 45 Mhz No. of RF carriers : 124 Access Method : TDMA/FDMA Modulation Method : GMSK Modulation data rate: 270.833 Kbps SK Ahsan
  • 15. Mobile telephony GSM-R Telemetry System  Fleet management  Automatic meter reading  Toll Collection  Remote control and fault Reporting of DG sets  Value Added Services SK Ahsan
  • 17.  Capacity increases  Reduced RF transmission power and longer battery life  International roaming capability  Better security against fraud (through terminal validation and user authentication).  Encryption capability for information security and privacy.  Compatibility with ISDN,leading to wider range of services SK Ahsan
  • 19. 2nd Generation GSM -9.6 Kbps (data rate) 2.5 Generation ( Future of GSM) HSCSD (High Speed circuit Switched data) Data rate : 76.8 Kbps (9.6 x 8 kbps) GPRS (General Packet Radio service) Data rate: 14.4 - 115.2 Kbps EDGE (Enhanced data rate for GSM Evolution) Data rate: 547.2 Kbps (max) 3rd Generation WCDMA(Wide band CDMA) Data rate : 0.348 – 2.0 Mbps SK Ahsan