3G VS. WIFI

1
3G VS. WIFI
2
Introduction

• 3G refers to the collection of third generation
  cellular technologies that are designed to allow
  mobile cellular operators to offer integrated
  data and voice services over cellular networks.
• WIFI refers to the 802.11b wireless Ethernet
  standard that was designed to support wireless
  LANs .
• Two technology reflect fundamentally
• The Goal of Discussion of these Two technology

3

• 3G
• 3G is a Technology for Mobile service providers
• M.S.P use licensed spectrum to provide mobile
  telephone coverage
• Each Mobile base Station support users up to
  several kms
• The First mobile Services were Analog
• Wireless Mobile Services has been Telephony
• Data rates AMPS gt 2G gt3G

4

• Implementation
• The first pre-commercial 3G network was launched
  by NTT DoCoMo in Japan branded FOMA, in May of
  2001 on a pre-release of W-CDMA technology.
• The first commercial launch of 3G was also by NTT
  DoCoMo in Japan on October 1, 2001.
• The second network of 3G was launched by SK
  Telecom in South Korea on the CDMA2000 1xEV-DO
  technology.

5

• Standards
• International Telecommunications Union consists
  of
• Six radio Interfaces.
• W-CDMA
• CDMA2000
• TD-CDMA/TD-SCDMA
• UWC
• DECT
• MOBILE WIMAX
• 3G technologies enable network operators to
  offer users a wider range of more advanced
  services while achieving greater network capacity
  through improved spectral efficeincy.

6

• Evolution of 3G
• Cellular mobile telecommunications networks are
  being upgraded to use 3G technologies from 1999
  to 2010.
• Japan was the first country to introduce 3G
  nationally, and in Japan the transition to 3G was
  largely completed in 2006.
• Korea then adopted 3G Networks and the
  transition was made as early as 2004.

7

• WiFi
  
• WiFi is the popular name for the wireless
  Ethernet 802.11b standard for WLANS.
• WiFi LANS operate using unlicensed spectrum
  2.4GHZ band.
• Each base station can support connections only
  over a range of a hundred meters.
• Number of Service Providers that are offering
  WiFi services.

8

• Commercial WiFi
• C.W. services are available in places such as
  Internet cafes, Coffee houses and Airports around
  the world.

9

• WiSE Technologies provides commercial hotspots
  for airports, universities, and independent cafes
  in the US
• T-Mobile provides hotspots in many Starbucks in
  the U.S, and UK
• Pacific Century Cyber works provides hotspots in
  Pacific Coffee shops in Hong Kong

10

• Free WiFi
• Many Groups, Communities, Cities, Municipalities
  have set up free WiFi networks.
• Many Smaller Countries and Municipalities provide
  Free WiFi hotspots and residential WiFi internet
  access to everyone .
• Many Universities provide free WiFi internet
  access.
• McDonalds corporation offers WiFi access branded
  McInternet

11

• Advantages of WiFi
• Wi-Fi networks support roaming, in which a mobile
  client station such as a laptop computer can move
  from one access point to another as the user
  moves around a building or area.
• Many access points and network interfaces support
  various degrees of encryption to protect traffic
  from interception.
• Wi-Fi is a global set of standards. Unlike
  cellular carriers, the same Wi-Fi client works in
  different countries around the world

12
How are WiFi and 3G same?

• Both are wireless
• Both are access Technology
• Both offer broadband data service

13

• How are They Different?
• The important ways in which WiFi and 3G
  approaches to offering broadband wireless access
  services are substantively different.
• Current Business Model is Different
• 3G represents an extension of the mobile
  service-provider model. His is the technology of
  choice for upgrading existing mobile telephone
  services to expand capacity and add enhanced
  services.

14

• 2. Spectrum policy and management
• One of the key distinctions between 3G and WiFi.
• Mobile Technology use licensed spectrum, while
  WiFi uses unlicensed shared spectrum.
• Important Implications for
• 1) Cost of service,
• 2) Quality of Service (QOS) and congestion
  management,
• 3) Industry Structure.
• Licensed spectrum is expensive.
• Unlicensed spectrum used by WiFi imposes strict
  power limits on users.
• It easier for a 3G provider to market a service.
• A WiFi network can address the problem of
  congestion associated with users on the same WiFi
  network.

15

• 3. Status of Technology development different
• The two technology differ with respect to
  their stage of development in a number of was.
• Development status3333
• Embedded support for services
• Embedded serial-to-Wi-Fi module

16

• 3G and WiFi is their embedded support for voice
  services.
• Potential advantages of 3G over WiFi is that 3G
  offers better support for private communications
  than does WiFi.
• Standardization
• Service/Business model
• 3G is more developed than WiFi as a business and
  service model.
• WiFi is more developed with respect to the
  upstream supplier markets.
• Both 3G and WiFi access face great supplier.

17

• Some implications for industry structure and
  public policy
• WiFi is good for competition
• The success of WIFI wireless local access
  altetives is likely to be good for local
  competition
• If both 3G and WiFi survive, then the diversity
  of visible networking infrastructure strategies
  will be conductive to greater facilities-based
  competition.
• Success of the WiFi service model could help
  unlock the substantial investment in private
  networking infrastructure that could be used as
  the basis for constructing an alternative
  infrastructure to the PSTN and cable wire line
  networks.
• WiFi service model survives, then we would expect
  this to be inherently more competitive because of
  the lower entry barriers for setting up local
  property services.
• WiFi model depends on wore line infrastructure to
  connect to the Internet Backbone.

18

• WiFi and 3G can complement each other for a
  mobile provider
• Each of the technology has distinct advantages
  over the other that would allow each to offer
  higher quality services under disparate.
• 3G and WiFi networks provides the opportunity to
  offer both near coverage with good voice
  telephony support.

19

• Spectrum policy is key
• One of the key distinguishing features between 3G
  and WiFi is the use of licensed verses unlicensed
  spectrum.
• 3G secondary markets would allow more flexible
  management of property rights.
• WiFi the emergence of spectrum markets may make
  it possible o adopt a suitable mechanism for
  addressing congestion issues.

20

• Success of WiFi is potentially good for
  multimedia content
• Multimedia content benefits for higher bandwidth
  services so the ability to support higher speed
  wireless access may help encourage the
  development of broadband multimedia content.
  

21

• Technical progress favors heterogeneous future
• Technical progress in wireless services favors a
  heterogeneous wireless future.
• Once the world accepts the need to coordinate
  heterogeneous technologies.

22

• Conclusions
• This article offers a qualitative comparison of
  two wireless technologies that could be viewed as
  simultaneously as substitute and/or complementary
  paths for involving to broadband wireless access.
  The two technologies are 3G, which is the
  preferred path for mobile providers, and WiFi ,
  one of the many WLAN technologies