History of mobile communication protocols and some practical usage of mobile communications in brief Presentation is created for getting mark on college.

1. MOBILE COMMUNICATIONS
History of mobile communication protocols and
some practical usage of mobile communications
Polytehnic of Zagreb Department of Electrical Enginering
Marko Idžan

2. Content of this presentation
•GSM
•CDMA
•3G
•4G/LTE
•Other communications protocols used
on smartphones
•Using mobile communications for
location detection
•Speedtests of 2G, 3G and 4G Networks
•Questions

3. GSM
•Global System for Mobile
Communication
•GSM is trademark owned by GSM
Association
•Developed in Europe by Europe
Telecommunications Standards Institute
•Widely used – about 80% of market
share
GSM logo

4. History of GSM
•1981 – started to work on Euoropean
mobile communications
protocolEuropean Conference of
Postal and Telecommunications
Administrations(CEPT)
•1986 – 900MHz spectrum selected
•1987 – first GSM Technical Specifications
•1989 – CEPT renamed to ETSI

5. History of GSM
•1990 – Phase I specifications published
•1991 – GSM expanded to 1800MHz
spectrum
•July 1st 1991 – first mobile call via
Telenokia and Siemens operated by
Radiolinja
•1992 – first SMS was sent
•1993 – Telecom Australia expanded
GSM outside Europe
•1995 – 1900MHz spectrum was reserved
for GSM in USA

6. History of GSM
•1995 – SMS launched commercially
•1996 – First pre-paid SIM cards
•2000 – First launch of GPRS (2G
Network)
•2002 – First MMS sent
•2005 – HDSPA First 3G networking on
GSM specifications

7. How GSM Works
Mobile system Base Stations
Subsystem GPRS Core
Network
Operations
Support System

8. CDMA
•Code Division Multiplication Protocol
•W-CDMA
•3G protocols
•4G/LTE is based on W-CDMA
specifications

9. History of CDMA
•Late 1990’s – Developed by NTT
DoCoMo for FOMA (variant of 3G)
•IMT-2000  one of specifications for
worldwide 3G network
•Lately renamed to UMTS
•Qualcomm – first company which
created 3G chips for CDMA (W-CDMA
later)

10. 3G
•HSDPA
•UMTS (W-CDMA)
•HSUPA
•HSDPA+
•Problem: battery drain on smartphones
•Positive side: Network speed up to
15Mbps in download and 7.2Mbps in
upload

11. 4G/LTE
•Recently grow
•Started using in 2010 (rare phones in US)
•Huawei/ZTE  most 4G chipsets made
•Samsung most phones with 4G
chipset inside
•Problem: Uses more battery than 3G
•Positive side: download speed up to
100Mbps in booth sides (upload and
download)

12. Other mobile communication
protocols
•WiFi
•WiFiDirect  Android
•WiMAX US Only
•NFC
Honorable mentions

13. Locating using mobile phone
•Inaccurate: Base stations registration
and number detection
•Accurate: Mobile networks (2G, 3G,
4G), WiFi and base stations registration
•Precise: Mobile networks, base stations
registration, WiFi and GPS

14. Location settings in Android KitKat

15. Speedtests of 2G, 3G and 4G
networks
2G Network on Vipnet 3G Network on T-Mobile
4G Network on T-Mobile

16. Questions
•What is abbrevation for Global System
for Mobile Communications?
•GSM
•Is GSM primarly european or American
standard?
•European

17. Questions
•Which year was made a first call via
GSM?
•1991
•CDMA is abbrevation for ...
•Code Division Multiplication Protocol

18. Questions
•Which year was made a first call via
GSM?
•1991
•Which one is better for batery life on
smartphones: 2G or 4G?
•2G

19. Questions
•Which company creates most of 4G
chipsets?
•ZTE / Huawei
•Which one is better for locating your
device: GSM only or GSM and GPS?
•GSM and GPS

20. THANK YOU FOR YOUR
ATTENTION
If you have any other questions about GSM you
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