3G VERSUS WI-FI(2)

8/2/2019 3G VERSUS WI-FI(2)

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The two most important phenomenaimpacting telecommunications over the pastdecade have been explosive parallel growth

of both the internet and mobile telephoneservices. The internet brought the benefits ofdata communications to the masses withemail, the web, and ecommerce; while mobileservice has enabled "follow-meanywhere/always on" telephony. Theinternet helped accelerate the trend fromvoice-centric to data-centric networking. Dataalready exceeds voice traffic and the datashare continues to grow.


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3G refers to the third generation of mobile

telephony (that is, cellular) technology.

The third generation, as the name suggests,

follows two earlier generations The first launch of 3G was by NTT Docomo in

Japan.

Emtel launched the first 3G network in Africa.


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Wi-Fi suggests wireless fidelity.

Wi-fi is a mechanism that allows an electronic device

to exchange data wirelessly over a computer network.A device enabled with Wi-Fi, such as a personal

computer, video game console, smartphone, tablet or

digital audio player, can connect to a network resource

such as the Internet via a wireless network accesspoint.


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Internet access:

A Wi-Fi-enabled device can connect to the Internet when within

range of a wireless network connected to the Internet.

The coverage of one or more (interconnected) access pointscalled

hotspotscomprises an area as small as a few rooms or as large as

many square miles.

Direct computer-to-computer communications

Wi-Fi also allows communications directly from one computer to

another without an access point intermediary.This is called ad hoc Wi-Fi transmission.


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Campus-wide Wi-Fi

Many traditional college campuses

provide at least partial wireless Wi-FiInternet coverage


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The bandwidth and location informationavailable to 3G devices gives rise toapplications not previously available to mobile

phone users. Some of the applications are: Mobile TV

Video on demand

Videoconferencing Telemedicine

Location-based services


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With WCDMA based 3G, as the dataspeed increases the coverage area of

the cell become smaller and smaller.

For data rates of 2 Mbps and above, aWCDMA cell can cover only an area of

10 meter radius ie. about 300 sq.

meters.


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ADVANTAGES OF WIFIWi-Fi allows the deployment of local area networks (LANs) without wires for client

devices, typically reducing the costs of network deployment and expansion. Spaces

where cables cannot be run, such as outdoor areas and historical buildings, can host

wireless LANs.

As of 2010 manufacturers are building wireless network adapters into most laptops.The price ofchipsets for Wi-Fi continues to drop, making it an economical networking

option included in even more devices. Wi-Fi has become widespread in corporate

infrastructures.

Different competitive brands of access points and client network-interfaces can inter-

operate at a basic level of service. Products designated as "Wi-Fi Certified" by the Wi-Fi Alliance are backwards compatible. "Wi-Fi" designates a globally operative set of

standards: unlike mobile phones, any standard Wi-Fi device will work anywhere in the

world.
http://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Chipsethttp://en.wikipedia.org/wiki/Mobile_phonehttp://en.wikipedia.org/wiki/Mobile_phonehttp://en.wikipedia.org/wiki/Mobile_phonehttp://en.wikipedia.org/wiki/Mobile_phonehttp://en.wikipedia.org/wiki/Chipsethttp://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Local_area_network


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3G

The Advantage that 3G tends to have when compared to all earlierforms of next generation mobile communications systems is an

improvement in bit rate. The higher bit rate capabilities have brought

about a move in service providers to indulge into

producing many bandwidth intensive applications that would not havebeen conceived of otherwise.

It allows increased call volumes and support for multimedia data

applications, such as video and photography.

Consumers will be charged on the quantity of data they transmit, not

on how much time they are connected to the network, while with 3G

you are constantly online and basically pay for the information you

receive.


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SOME IMPLICATIONS FOR

INDUSTRY STRUCTURE AND

PUBLIC POLICY

1. Wi-Fi is good for competition

2. Wi-Fi and 3G can compliment each other

for a mobile provider.3. Spectrum Success of Wi-Fi is potentiallygood for multimedia content.

4. Policy is key.

5. Technical progress favors heterogeneousfuture.


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3G VERSUS WI-FI(2)