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Introduction
The 3G network is the third generation of mobile
networking and telecommunications. It features a wider
range of services and advances network capacity over the
previous 2G network. The 3G network also increases the
rate of information transfer known as spectral efficiency.
Wireless networking technology that uses radio waves to
provide wireless high-speed Internet and network
connections. The Wi-Fi Alliance, the organization that
owns the Wi-Fi (registered trademark) term specifically
defines Wi-Fi as any "wireless local area network
What is 3G?
3G is a technology for mobile service providers.
• To support the service, mobile operators maintain a network
of interconnected and overlapping mobile base stations that
hand-off customers as those customers move among
adjacent cells.
• service providers will have to upgrade their networks to one
of the 3G technologies which can support data rates of from
384Kbps up to 2Mbps
What is Wi-Fi?
WiFi is the popular name for the wireless Ethernet 802.11b
standard for WLANs.
Operate using unlicensed spectrum in the 2.4 GHz band.
The current generation of WLANs supports upto 11Mbps,
data rates within 300 feet of the base station.
WLAN technology was not designed to support high-speed
hand – off associated with users moving between base station
coverage areas.
How 3G works..
The 3G network might be divided up in hierarchical fashion:
Macro cell - the area of largest coverage, e.g., an entire city.
Micro cell - the area of intermediate coverage, e.g., a city centre.
Pico cell - the area of smallest coverage, e.g., a "hot spot" in a hotel.
Conclusion
This article offers a qualitative comparision of two
wireless technologies that can be viewed
simultaneously as substitute and / or complimentary
paths for evolving to broad band wireless access.
3G-the preferred upgrade path for mobile providers.
WiFi -one of the many WLAN technologies.
Both technologies are likely to succeed in the market
place.
we expect 3G mobile providers to integrate WiFi
technology into their networks thus expecting these
two technologies to be complimentary in their
successful mass market deployment.