Technologies beyond 3G - csg.uzh.ch · Mobile Systems Seminary Phillipp Buchmann Dane Marjanovic 3...

Technologies beyond 3G

Mobile Systems Seminary Phillipp Buchmann Dane Marjanovic 2

CONTENT

From 3G to 4G3G Technologies now (Technical overview)Migration from 3G to 4G (WiFi to Wi-Max,…)Short Trendanalysis

4G Technologies and InfrastructuresWi-Max, FDMA

Long term Outlook and Conclusions


FROM 3G TO 4G3G TECHNOLOGIES NOW

Current circumstancesvoice call over GSMdata transfer circuit switched

HSCSD (43,2Kbit)CSD (9,6Kbit)

data transfer packet switchedGPRS (57,6Kbit)UMTS (384Kbit)


Universal Mobile TelecomunicationSystemPacket switched Roaming possibility with GSM

incompatibility with GSM (dual mode)Infrastructure remains mostly the same

expensive licenses

FROM 3G TO 4G3G TECHNOLOGIES NOW | UMTS | ARCHITECTURE


Supports a larger number of customerssuited for Applications with high bandwidth requirementSecurity, QoScurrently used in mostly urban areasSpeed:

overall capability 1920Kbit/scurrently available 384Kbit/s

FROM 3G TO 4G3G TECHNOLOGIES NOW | UMTS |CAPABILITIES


life TV feedsSwisscom allready providing severalstreams (SFDRS, MTV)

Videoconferencingexpected killer application

Web browsingmultimedia services and applicationsin general

FROM 3G TO 4G3G TECHNOLOGIES NOW | UMTS | USAGE


General Packet Radio Servicemost used data servicepacket-switched

considered to be placed in thecategory of 2.5G

FROM 3G TO 4G3G TECHNOLOGIES NOW | GPRS | ARCHITECTURE


packet-switchedideal and efficient for variable bandwithusing applications

E-mail, Web browser, etc.charged per Kbit, not per time unit better usage of network infrastructure

FROM 3G TO 4G3G TECHNOLOGIES NOW | GPRS | CAPABILITIES


Checking E-mailSurfing WAP- portalsMMS

FROM 3G TO 4G3G TECHNOLOGIES NOW | GPRS | USAGE


2 types of networksInfrastructure

AdHoc

FROM 3G TO 4G3G TECHNOLOGIES NOW | WLAN | ARCHITECTURE


security methodsWEP (Wired Equivalent Privacy)

suitable for most small networksSSID (Secure Service Identifier)MAC (Media Access Control) adressfilteringVPN (Virtual Private Network)

most secure form

FROM 3G TO 4G3G TECHNOLOGIES NOW | WLAN | ARCHITECTURE


Wi-Fi uses unlicensed radio spectrumHigh datarates

up to 54Mb/slow costeasy installation

FROM 3G TO 4G3G TECHNOLOGIES NOW | WLAN | CAPABILITIES


free vs. commercial wireless networksoffers many advantages in mobile computing

but also very dangeroussecurity considerations

FROM 3G TO 4G3G TECHNOLOGIES NOW | WLAN | USAGE


FROM 3G TO 4GMIGRATION CONSIDERATIONS FOR 3G TO 3.5G AND 4G


Cell size is smaller than 3Gcells made as large as possible via high power based stations

different antenna technology

FROM 3G TO 4GMIGRATION CONSIDERATIONS FOR 3G TO 3.5G AND 4G | INFRASTRUCTURE CHANGES


only packet switched protocolIPv6

FROM 3G TO 4GMIGRATION CONSIDERATIONS FOR 3G TO 3.5G AND 4G | COMUNICATION PROTOCOL CHANGES


Different wireless networks pose challenges

size limitationpower consumption limitationscostbackward compatibilities

FROM 3G TO 4GMIGRATION CONSIDERATIONS FOR 3G TO 3.5G AND 4G | NEW DEVICES


FROM 3G TO 4GTrend Analysis | Where is Mobile Technology going?

No clear definition4G to be considered as

Intergrated Wireless SystemSet of new transmission protocols and technologies


4G as integrated Wireless System enabling seamless roaming

Deeper focusing on user experienceEffective open and flexible integration of multiple technologiesInteractive multimedia supportGlobal RoamingLOW Cost

FROM 3G TO 4GTrend Analysis | Where is Mobile Technology going?


First TrendGreat heterogenity of deployed networksService portability and interoperability

Second TrendNovel concepts for opertunistics and adaptive wirelessnetwork infrastructureProposal

„Network of Networks“Third Trend

ABC (Always best connected)Fixed and mobile wireless accessMostly technology forecast and definition

FROM 3G TO 4GTrend Analysis | Possible Trends


WWRF (Wireless World Research Forum)Nokia, Alcatel, Siemens, EricssonVisions on strategic future research

Samsung VisionEstabilishing 4G technology mobile comunication initiativeRelationships to commercial and academic partners

FROM 3G TO 4GTrend Analysis | Industry initiatives


4G INFRASTRUCTURES AND TECHNOLOGIES

Not clearly definedThe most probable:

Wi-MaxOFDM (MC-CDMA, TDMA)MIMO - OFDM


Worldwide interoberability forMicrowave access

IEEE802.16 standardSuited for MAN

4G INFRASTRUCTURES AND TECHNOLOGIES |Wi-MAX


Operates similar to Wi-FiBut at higher speedsOver greater distancesGreater number of users

IEEE802.16 specsRange 30miles (50km) radius from basestationSpeed 70Mbit/sLine of sight not neededFrequency bands 2 to 11 GHz and 10 to 66GHz

Licensed and unlicensed bands

4G INFRASTRUCTURES AND TECHNOLOGIES |Wi-MAX| technical intro


WI-MAX systemWi-Max TowerWi-Max Reciever

Acces FormsNon line of sight

Lower frequency (2-11GHz)Line of sight

Higher frequency (up to 66GHz)



Fix networks infrastructures requiringhigh gain antennasOverall requirements rather modest…

4G INFRASTRUCTURES AND TECHNOLOGIES |Wi-MAX| Infrastructure requirements


Ideally suited to replace costly installation and services of short distance lines (Enterprise T1 lines)Wireless connecting buildingsScenario

4G INFRASTRUCTURES AND TECHNOLOGIES |Wi-MAX| usage possibilites


Orthogonal Frequency Division Multiplexing

comes from FDMMCM as underlying technologyTransmits multiple signals simultaneously

4G INFRASTRUCTURES AND TECHNOLOGIES |OFDM| technical intro


MIMO-OFDM (Multiple Input, Multiple Output-OFDM)

by Iospan Wirelessuses multiple antennas fortransmitting radiosignals

4G INFRASTRUCTURES AND TECHNOLOGIES |OFDM| technical intro


OFDM and versions are used by other(wireless) technologies

requirements fall togethercaution here:

proper interfaces and implementations

4G INFRASTRUCTURES AND TECHNOLOGIES |OFDM| infrastructure requirements


DAB-OFDMbasis for Digital Audio Broadcasting standard

ADSL-OFDMAsymetric Digital Subscriber Line standard

WLANp-to-p and p-to-mp

…

4G INFRASTRUCTURES AND TECHNOLOGIES|OFDM| usage possibilities


OUTLOOK AND CONCLUSION

What is needed to build 4G networks of thefuturePossible Applications for 4G

Virtual PresenceVirtual NavigationTele-medicineTele-geoprocessingCrisis management applicationsEducation


4G as integrated wireless system4G supports interactive multimediaserviceswider bandwidthshigher bitrates4G still to come

OUTLOOK AND CONCLUSION

?????QUESTIONS??????

Sources:www.4g.co.ukwww.networkworld.com/columnists/2004/0112wizards.htmlwww.item.ntnu.no/fag/tm8100/Pensumstoff2004/UMTS2ANNE.pdfwww.commdesign.com/story/OEG20010626S0065http://z2.inf.tu-dresden.de/andy/Zusatzfolien/InRichtung4G.pdf


DISCUSSION

What do you expect from 4G?


DISCUSSION

Usage possibilities for 4G?What is the ultimate killer application for4G?


DISCUSSION

What goes really beyond 3G?the conceptthe technologythe ideathe infrastructure


DISCUSSION

Do we need 4G as a new concept orsystem?

speedroaming…


DISCUSSION

What is to be considered a 4G technology or infrastructure?

new protocols?new devices?existing devices and protocols?


DISCUSSION

Cost vs. usage vs. need for a 4G infrastructure

Cost considerations regardinginfrastructure implementation?


DISCUSSION

How industry initiatives influencetechnology development

to narrow focus on a single technologycompetition between industry firms as an obstacle to free and constructivetechnology development


DISCUSSION

Will Wi-MAX succeed and fully replaceWi-Fi?


DISCUSSION

When will 4G be implemented (or fullydeployed)?

Technologies beyond 3G - csg.uzh.ch · Mobile Systems Seminary Phillipp Buchmann Dane Marjanovic 3...

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