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.RAAJDHANI ENGG COLLEGE

MANISHA SWAIN :- &BRANCH COMPUTER SCIENCE E . :- .REGD NO 0801294058

3 G( )V S W I F I


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: -I N T R O D U C T I O NHistory of 3g3gAdvantages of 3g

Disadvantages of 3gHistory of wi-fiAdvantages of Wi-FiDisadvantages of Wi-Fi

3g Vs Wi-FiConclusion


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: -HISTORY

History and evolution of mobile radio:-

Brief history of cellular wireless telephony

Radio technology today: TDMA, CDMA

Demographics and market trends today3G vision, 3G migration paths

Evolving network architectures:-

Based on GSM-MAP or on IS-41 today

3GPP versus 3GPP2 evolution paths

3G utilization of softswitches, VoIP and SIP

Potential for convergence


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: -3G Vision Universal global roaming Multimedia (voice, data & video)

Increased data rates:-

384 kbps while moving

2 Mbps when stationary at specificlocations

Increased capacity (more spectrally

efficient) IP architecture.

Problems:-

No killer application for wireless data as

yet


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: -3G QoS

Substantial new requirements on theradio access network.

Traffic classes:-Conversational, streaming, interactive,

backgroundAbility to specify:-

Traffic handling priority

Allocation/retention priority

Error rates (bits and/ or SDUs)Transfer delay

Data rates (maximum and guaranteed)

Deliver in order (Y/N)


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: -Background

3G networks:-W-CDMAUMTSFOMA

cdma2000 1x EVDO, 3xTD-SCDMA

UMAEDGE

Supports data rates from 384kbps to2Mbps

Packet switched data servicesUse Licensed spectrum, no spare

spectrumNo proven mathematical formula on how

to handle capacity problems

Network divided into cellsEach cell shares bandwidth


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: -ADVANTAGES OF 3G


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CDMA

GSM

TDMA

PHS(IP-Based)

64Kbps

GPRS

115Kbps

CDMA 1xRTT

144 Kbps

EDGE

384Kbps

cdma2000

1X-EV-DV

Over 2.4 Mbps

W-CDMA

(UMTS)

Up to 2Mbps

2G

2.5G

2.75G 3G

1992 - 2000+2001+

2003+

1G

1984 - 1996+

2003 - 2004+

TACS

NMT

AMPS

GSM/

GPRS

(Overlay)

115 Kbps

9.6 Kbps

9.6 Kbps

14.4 Kbps

/ 64 Kbps

9.6 Kbps

PDC

Analog Voice

Digital VoicePacket Data

IntermediateMultimedia

Multimedia

PHS

TD-SCDMA

2 Mbps?

9.6 Kbps

iDEN

(Overlay)

iDEN

Source: U.S. Bancorp Piper Jaffray

Migration To 3G : -


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- :-3G 324M Video ServicesInitial mobile video service uses 3G

data bandwidth w/o IP multimediainfrastructure.Deployed by DoCoMo in Japan today..

Leverage high speed circuit-switchdata path..

64 kbps H.324 video structure

MPEG 4 video coding

AMR audio coding

Supports video clips, video streamingand live video conversations..

MS to MS


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3G Partnership Project( ) : -3 G P P3GPP defining migration from GSM to

UMTS (W-CDMA):Core network evolves from GSM-only to

support GSM, GPRS and new W-CDMAfacilities

3GPP Release 99:Adds 3G radios

3GPP Release 4:

Adds softswitch/ voice gateways andpacket core

3GPP Release 5:First IP Multimedia Services (IMS) w/

SIP & QoS3GPP Release 6:


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: -World Telecom Statistics

0

200

400

600

800

1000

1200

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

Landline Subs

Mobile Subs

(

)

million

s

Crossoverhas happened

!May 2002


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: -DISADVANTAGES


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:Critical For 3G : -Continued Growth In China

CDMA IS-95 (2G) has been slow to launch inChina

Why would the launch of 3G be any different?

PHS (2G) with China Telecom/Netcom is gaining

Likely 3G licensingoutcomes:

China Unicom cdma2000

China Mobile W-CDMA

China Telecom W-CDMA/ TD-SCDMA?

China Netcom W-CDMA/ TD-SCDMA?

: -R i s k


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: -3G Spectrum Expensive


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- : -WI FI


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: -HistoryWiFi is used to

describe theunderlyingtechnology ofwireless local areanetworks (WLAN)based on the IEEE802.11specifications .

WiFi developed by

Kyle Brown. IEEE 802.11 denotes

a set of WirelessLAN/WLANstandards

developed by


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: -First WiFi Intended for

cashiers Called

WaveLAN

Vic Hayes Father of WiFi


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18

-Network LevelArchitecture : -


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19

: -Protocols


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- : -ADVANTAGES OF Wi Fi


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Wireless Access TableWireless Router

Wireless Ethernet Bridge

Range Extender

: -A P P L I C A T I O N S


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3G ( ) vs - : -Wi Fi


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: -AgendaPendahuluanTeknologiPerbandinganPeluang Business& MarketingThe FutureConclusion


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&Introduction: -Technology

cdmaOne

GSM

TDMA

PDC

2G9.6 - 14.4

kbps

MC1X

GPRS

evolved2G64144 kbps

WLAN

Bluetooth

evolved 3G384 kbps - 20

Mbps

Always Best

Connected

EDGE

WCDMA

cdma2000

3G384 kbps - 2

Mbps

4G100Mbps?

xMbps @

60GHz

Adhoc

networks

Optical

Networking

Newair-

interfa

ce?

Virtual

Reality

Always BestConnected


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&Cellular TechnologyEvolution : -

0.384 2Bandwidth

(Mbps)

Network

Mobile

Fixed

2G 3G

3G applicationsgetting bigger, better

and more beautiful

Wireless/mobilespecific broadband

applications

Fixed networkapplications

go wireless/mobile

4G

Broadband,Extreme bit rates

NB WB BB

20

Evo

lved

2G

Evo

lved

3G


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Wireless Personal Area Network

Wireless Local Area Network

: -Telco VisionWireless Interworking: -TechnologiesHand-over

Hand-over

Wireless Wide Area Network


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: . :-Comparisons 3G vs WiFi3G WiFi

Standard WCDMA,CDMA2000 IEEE 802.11

Max Speed 2 Mbps 54 Mbps

Operations Cell phone companies Individuals, WISP

License Yes No

Coverage Area Several km About 100m

Advantages Range, mobility Speed, cheap

Disadvantages Relatively slowExpensive

Short range


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: - .Comparisons 3G vs- : -Mobile FI3G MOBILE-FI

Standard WCDMA,CDMA2000 IEEE 802.20

Max Speed 2 Mbps 16 Mbps

Operations Cell phone companies WISPs

License Yes Yes

Coverage Area Several km Several km

Advantages Range, mobility Speed, mobility

Disadvantages Relatively slowExpensive

Cost?


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3G ( . )vs WiFiCombination of the two technologies

prevents the capacity bottleneckassociated with 3G network. If a3G cell is being overloaded, the callor data connection can be handed off

to a WiFi Access-Point.

WiFi is less expensive to deploy then3G networks and can be deployed for

thousands of dollars vs.millions.

Since WiFi has a short range, but

more bandwidth compared to 3G,


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: -ADVANTAGES


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&Business Marketing: -Opportunities

Location basedservices

Internet access

MultimediaMessaging

Customized

infotainment Intranet/Extranet

access

.UMTSfo ru m


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, &Fun with 3G WIFI: -Bluetooth Wireless wakeups revisited: energy management

for voip over wi-fi smartphones, Agarwal et al,2007.

Proposed an architecture to use the GSM radioto wake up the WiFi radio upon an incomingVoIP call to leverage the better quality and

energy-efficiency ofWiFi while keeping itsscanning costs low.

Efficient and transparent dynamic content updatesfor mobile clients, Armstrong et al, 2006.

Application level modifications to reduceenergy consumption for updates to dynamicweb content.

Use a proxy to:-

only push new content when the portion ofthe web document of interest to the user


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Reducing the power consumption of wireless ,mobile devices with multiple radio interfaces, .Pering 2006 Strategies to intelligently switch between.WiFi and Bluetooth

- - : - -Context for wireless context sensitive energy, .efficient wireless data transfer Rahmati et al.2007 Show that intelligently switching betweenWiFi and GSM reduces energy consumptionsubstantially as WiFi consumes less. ,transmission power However in order to avoidthe cost of unnecessary scanning in the face,of poor WiFi availability the authors design,an algorithm that predicts WiFi availability

and the device scans for WiFi access pointsonly in areas whereWiFi is available with.high probability

:Energy Consumption in Mobile Phones AMeasurement Study and Implications for Network, , .Applications Balasubramanian et al 2009


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