What is 3G?
• 3G is the third generation technology offering
broadband mobile communications with
voice, video, graphics, audio and other
• It supersedes 2G and precedes 4G.
• 2.5G was a temporary bridge between 2G & 3G.
• Required Features:
– faster data-transmission speeds.
– greater network capacity.
– more advanced network services.
3G facilitates several new applications that have not previously been readily
available over mobile networks due to the limitations in data transmission speeds.
These applications range from Web Browsing to file transfer to Home
Because of the bandwidth increase, these applications will be even more easily
available with 3G than they were previously with interim technologies.
Feature Of 3G
3G promises increased bandwidth.
up to 384 Kbps at stable.
128 Kbps in a car or moving.
2 Mbps in fixed applications.
3G will work over wireless
air interfaces such as GSM,
TDMA, and CDMA.
• The new EDGE air interface
has been developed
specifically to meet the
bandwidth needs of 3G.
How does 3G works?
• 3G technology is intended for the true
multimedia cell phone(Smartphone).
• Features increased bandwidth and transfer rates
to accommodate Web-based applications and
phone-based audio and video files.
• 3G networks have potential transfer speeds of up
to 3 Mbps (3min mp3 take 15 sec to download).
• Comparison to the fastest 2G phones can achieve
up to 144Kbps (3min mp3 take 8 min to
Services By 3G
receiving streaming video from the Web
sending and receiving faxes
instantly downloading e-mail messages with
• Protocols in 3G transmit data in terms of
megabytes per second rather than
kilobytes(some as fast as 10 Mbps).
• Universal Mobile Telecommunication Service
• Wideband Code-Division Multiple Access
• High-Speed Downlink Packet Access (HSDPA)
• Evolution Data Maximized (EVDO)
• December 2005, 100 3G networks were
operating in 40 countries.
• In Europe, 3G services were introduced
starting in March 2003 in the UK and Italy.
• By June 2007 the 200 millionth 3G subscriber
had been connected.
• The first commercial launch of 3G was by NTT
DOCOMO in Japan on october 2001.
Advantage & Disadvantage of 3G
– International Telecommunication Union .
– International Mobile Telecommunications
– 3G networks do not use the same radio
frequencies as 2G.