.

1. MOBILE
COMMUNICATIO
N
 THE TERM ’MOBILE’ HAS COMPLETELY
REVOLUTIONISED COMMUNICATION BY
OPENING UP INNOVATIVE WAYS.
 BACKBONE OF SOCIETY.
 IMPROVED STANDARD OF LIVING.
 DO NOT DEPEND ON ANY PHYSICAL
CONNECTION.

2. GENERATIONS IN
MOBILE
COMMUNICATION
S
 DISCOVERY OF MOBILE PHONE-
1946.
 CELLULAR COMMUNICATION WAS
EVOLVED.
 CELLULAR CONCEPT WAS
DEVELOPED IN 1960’S AT BELL
LABORATORIES.
 AT 1990’S GOVERNMENT OF INDIA
OFFERED SPECTRUM LICENCE
FOR MOBILE COMMUNICATION ,
CELLULAR TECHNOLOGY
BECAME COMMON STANDARD.

3. GENETATION IN MOBILE
COMMUNICATION

4. FIRST
GENERATION
NETWORK (1G)
 FIRST GENERATION OF
WIRELESS TELEPHONE.
 DEVELOPED AROUND 1980.
 1G MOBILE PHONES WERE
BASED ON ANALOG SYSTEM.
 PROVIDED BASIC VOICE
FACILITY ONLY.

5. SECOND GENERATION
NETWORK (2G)
 IMPROVED THE AUDIO QUALITY IN TRANSMISSION.
 PHONE CONVERSATIONS ARE DIGITALLY ENCRYPTED.
 GREATER MOBILE PHONE COVERAGE.
 INTRODUCED DATA SERVICE FOR MOBILE.
 INTRODUCED ‘PICTURE MESSAGES AND MULTIMEDIA
MESSAGING SERVICES’(MMS).
 2G SYSTEM INTRODUCED TWO STANDARDS,
GLOBAL SYSTEM FOR MOBILES (GSM)
CODE DIVISION MULTILE ACCESS (CDMA)

6. CDMA
SECOND GENERATION NETWORKS

7. GLOBAL
SYSTEM FOR
MOBILE
(GSM)
 GLOBALLY ACCEPTED STANDARD
FOR DIGITAL COMMUNICATIONS.
 IT IS A DIGITAL CIRCUIT
SWITCHED NETWORK.
 THE FREQUENCY BAND VARIES
FROM 900MHZ TO 1800MHZ.
 THE NETWORK IS IDENTIFIED
USING A SIM (SUBSCRIBER
IDENTITY MODULE).
 USERS CAN SELECT HANDSET OF
THEIR CHOICES.
 DIFFERENT TECHNOLOGIES USED
TO ENHANCE DATA
COMMUNICATION.

8. GSM
 GPRS
 GENERAL PACKET RADIO
SERVICE.
 BASED ON PACKET DATA.
 GPRD BENEFITS FROM SHORT
ACCESS TIME AND HIGHER DATA
RATE.
 GPRS IS A DATA ONLY
TECHNOLOGY THAT HELPS TO
IMPROVE GSM VOICE QUALITY.
 GPRS BILLING IS BASED ON
VOLUME OF DATA TRANSFER.

9. GSM
EDGE
 ENHANCED DATA RATES FOR
GSM EVOLUTION.
 DIGITAL MOBILE PHONE
TECHNOLOGY.
 EDGE CAN FUNCTION ON ANY
NETWORK WERE GPRS
DEPLOYED.
 ITS DATA SPEED IS THREE TIMES
FASTER THAN GPRS.
 BOTH PHONE AND NETWORK
SUPPORT EDGE.

10. CODE DIVISION MULTIPLE
ACCESS(CDMA)
 USING CDMA SEVERAL TRANSMITTERS CAN SEND
INFORMATION SIMULTANIOUSLY OVER A SINGLE
COMMUNICATION CHANNEL.
 CDMA PROVIDES BETTER COVERAGE, BETTER
VOICE QUALITY, HIGH SECURITY THAN GSM.
 IT ALSO PROVIDE BETTER SIGNAL RECEPTION
EVEN IN LOW SIGNAL STRENGTH.

11. THIRD GENERATION
NETWORK (3G)
 HIGH DATA TRANSFER RATES FOR HANDHELD
DEVICES.
 MULTIMEDIA SERVICES COMBINING VOICE AND
DATA.
 WIRELESS BROADBAND.
 USED WCDMA-WIDEBAND CODE DIVISION
MULTIPLE ACCESS

12. FOURTH
GENERATION
NETWORK (4G)
 ALSO CALLED LONG TERM
EVOLUTION (L.T.E).
 PROVIDES MOBILE ULTRA-
BROADBAND INTERNET ACCESS TO
MOBILE DEVICES.
 HIGH SPEED AND PROVIDE
EXELLENT PERFORMANCE.
 USES ORTHOGONAL FREQUENCY
DIVISIONS MULTIPLE ACCESS
(OFDMA).