2. THIRD GENERATION
3G, short form of third
generation, is the third
generation of mobile
telecommunications
technology
A NEW GENERATION OF CELLULAR
STANDARDS HAS APPEARED
APPROXIMATELY EVERY TENTH YEAR
SINCE 1G SYSTEMS WERE
INTRODUCED IN 1981/1982. EACH
GENERATION IS CHARACTERIZED BY
NEW FREQUENCY BANDS, HIGHER
DATA RATES AND NON–BACKWARD-
COMPATIBLE TRANSMISSION
TECHNOLOGY. THE FIRST 3G
NETWORKS WERE INTRODUCED IN
1998 AND FOURTH GENERATION
"4G" NETWORKS IN 2008.
4. ADVANTAGES OF 3G
MORE BANDWIDTH,SECURITY AND
RELIABILITY
INTER PORTABILITY BETWEEN SERVICE
PROVIDERS
HIGH DATA SERVICES
RICH MULTIMEDIA SERVICES
NEW RADIO SPECTRUM TO RELIEVE
OVERCROWDING IN EXISTING SYSTEM
5. DISADVANTAGES OF 3G
EXPENSIVE INPUT FEES FOR THE 3G SERVICES
LICENSES.
NUMEROUS DIFFERENCES IN THE LICENSING
TERMS
IT IS A CHALLENGE TO BUILD THE NECESSARY
INFRASTRUTURE FOR 3G
EXPENSES OF 3G PHONES
LARGE CELL PHONES