broadband evolution

8/4/2019 Broadband Evolution

1/33

BROADBAND EVOLUTION


2/33

Broadband Evolution 2

MarketDrivers: CurrentDemandfor

BroadbandAccess Technologies

MarketSize

PC Owners

InternetUsers

OtherAccess Users

DemandforBroadbandAccess Services

Small Business/SOHO/Tele-worker ConsumerMarketin Africa ?


3/33


Whatis Broadband?

Thedefinition ofbroadbanddepends oncontext. Thereisadifferenceinperceptiondepending on whetheroneis looking aton-

campusnetworks, ownedandpaidfortheinstitution,andoff-campusnetworks, ownedbythirdpartyserviceprovidersandpaidforbyindividual users. Domestic usersaretypicallyofferedbroadband services upto amaximumof 1Mbit/s


4/33


Whatis Broadband?

Notmanynetworkmanagers wouldcall 10Mbit/sEthernetabroadbandtechnology. Theywouldreservethatphrase (iftheyuseditatall) for100Mbit/stechnologies.

Thedefinition ofbroadbandalso changesastechnological capabilityincreases. UntilrecentlyISDN2at128kbit/s wasregardedasbroadband, comparedwith the 64kbit/sbandwidth ofan ordinarytelephone

line. The DTIs currentdefinition ofbroadbandis2Mbit/sandaboveandnextgenerationbroadbandwilllikelybe10Mbit/sandabove.


5/33


Whatis Broadband?

Toputthisin context, full-screenbroadcastquality

video requiresinexcess of 2Mbit/salthough with good

compressiontechnologysuch asMPEG-4, VHS quality

video is feasibleat384kbit/sandDVD qualityvideo

within 1.5Mbit/s (although high qualityDVD may

require 2Mbit/s).


6/33


Whatis Broadband?

However,despitebeingpromotedas broadband,

mostservice offerings cannotyetachieve 2Mbit/s,

certainlynotata costaffordablebythemassmarket.

Forthepurposes ofthis course,broadbandisdefined

asanything inexcess of 128kbit/s, whilerecognising

thatthisis likelyto changeastechnologydevelopsandthemarketmatures.


7/33


Whatis Broadband?

The online Webster's dictionary defines

broadband as "A class of communication

channel capable of supporting a wide range of

frequencies, typically from audio up to videofrequencies. A broadband channel can carry

multiple signals by dividing the total capacity into

multiple, independent bandwidth channels,

where each channel operates only on a specificrange of frequencies."


8/33

Broadband Evolution8

Whatis Broadband?

The firstpartofanswering the question 'howdoesbroadbandwork'isto thinkaboutthephrasea "class of communicationchannel."We can gatherfromthisthatitisdifferentfromthenormal class of communication channelthatwe use- ourregularphone lines.Phone lines,also calledbasebandlines,normallycarry29.6kbps ofanalog data when usedforvoicecommunications. Butwith theadventoftheinternet,peoplebeganto demandfasterdatatransmission. A regular,baseband

phone line can carryupto 56kbps ofdata with the help ofa

high-speedmodem,butwithoutadditionaltechnology,thatisitsmaximum capacity.


9/33


Whatis Broadband?

So howdoesbroadbandwork? Ifyou thinkofabasebandlineas having one "channel"to sendinformation,you canthinkofabroadbandlineas

having multiple channelsthatyou useatthesametime. Notonlythat,butabroadbandconnectioniscapable of carrying a widerrangeandtype offrequencies,meaning differenttypes ofdata. Andwhatitcan carry,itcarries faster.Whenyou drive ontheinterstate, whathappens whentherearen'tenoughlanes forthenumberof cars ontheroad? Everyoneisforcedto go slower.


10/33


Whatis Broadband?

The samehappens with the internet. Think of yourconnection to the internet as a tunnel that links yourcomputer to the internet. A regular phone line canallow only a small amount of data to pass through at

a time. In comparison, a broadband is a wider (orbroader) tunnel, allowing a greater amount ofinformation to pass through your connection at onetime. The breadth of this tunnel is called"bandwidth." The more bandwidth you have, the

faster you can move data. With broadband service,you can also download files that require a great dealof different types of frequencies as well, such asaudio and video files.


11/33


Whatis Broadband?

This is a partial answer to thequestion 'how doesbroadband work,' but the otherhas to do with theway that broadband services can compress andtransmit that data that you're sending. Go back to

the cars on the interstate analogy. What if suddenlyall of the cars could be miniaturized? What wouldthat do to the traffic jam? Or if they could use all ofthe space available in the tunnel - above yourhead,between cars, etc. Broadband technology not only

widens the channels you have, but it uses themmoreefficiently. Meaning you can get more out ofthe bandwidth that you have. Broadband makes yourinternet experience faster and moreefficient overall.


12/33


Evolution of Broadband Services

Broadbandcommunications consists ofthetechnologiesandequipmentrequiredto deliverpacket-baseddigitalvoice,

video,anddataservicesto endusers. Broadbandaffordsendusershigh-speed,always-onaccess

to the Internetwhileaffording serviceproviderstheabilitytooffervalue-addedservices to increaserevenues.

Broadbandaccesstechnologiesarebeing deployedto

addressthebandwidth bottleneckforthe "lastmile,"theconnection of homesandsmallbusinessesto thisinfrastructure.


13/33



Asbroadbandaccessbecomesavailableto home

users,itistrulychanging the waypeople workand

play. Userstiredof waiting forWebpagesto downloadusing dial-upmodem Internetaccessaresigning up for

broadbandaccessservices.Whattheyfindisthatnot

onlydoesbroadbandaccessresultin fastWebsurfing

dueto higherconnectionspeeds,butitalso hasseveral otherbenefits.


14/33



The higherconnectionspeedsenablemultimedia

applicationssuch asreal-time Internetaudio

streaming,posting anddisplaying digitalphotographsforfriendsandfamily,viewing video clips ofnews

eventsandmovietrailers,andtaking virtualtours of

hotelsandresortareasbeforemaking reservations.

Becausebroadbandaccessisalways on, unlikedial-upaccess,thereisno waitto connectto the Internet.


15/33



Thus,people with broadbandaccesstendto leavetheirpersonal computers (PCs) turnedonandusetheInternetformoremundanetaskssuch as checking

television listingsandlooking upphonenumbers-tasksthatwerenotworth thebotherwhenaslowdial-up connection firsthadto beestablished. Thepresence ofbroadbandaccessalso meansthatthetelephone lineisno longertiedup whenaccessing the

Internet. Thissavestheneedtopurchaseasecondphone lineandenablesthe userto talkto someone onthephone whileaccessing information ontheWeb.


16/33



Anotherimportantaspectofbroadbandaccessto the

homeisthatitallowspeopleto telecommuteeffectively

byproviding asimilarenvironmentas whentheyarephysicallypresentintheiroffice:simultaneous

telephoneandcomputeraccess, high-speedInternet

andintranetaccess fore-mail, filesharing,andaccess

to corporateservers.


17/33



Oncepeople obtainbroadbandaccessto the home,

theyfindthatthisaccessneedsto besharedwith other

members ofthe familyusing multiplePCs. Thisincludes workers who use laptopPCsattheir

workplaceanddesireto beableto usethesame laptop

athome. Asaresult,peopleareinstalling local-area

networks (LANs) intheirhome. Oncethis LANisinplace,people wantto useitto share files,printers,and

devicessuch asscanners.


18/33



Oncebroadbandaccessandhomenetworking reaches

criticalmassinterms ofmarketpenetration,there will

beanew class ofend-userdevicesthatwillenablemanynew Internet-enabledapplications. Already,

peopleareabletoperform functionsremotelyviathe

Internet:monitoring andcontrolling theirhomes,

viewing theirchildren who areinday-care centers,checking on livetraffic conditions,andplaying stereo-

qualitymusic overInternetradios.


19/33


KeyDrivers


20/33



Thevision ofthebroadbandhomeisthatbroadband

multimedia-i.e.,video,audio,voice,anddata-willbe

deliveredto andwithin the hometopersonalendpointdevices. Services willbeaffordable,easyto use,and

availableto theaverage familyandwillbedelivered

quickly,securelyandreliably.Moving forward,all

things willbe connected.


21/33


Broadband Connectivity

Figure 2shows howbroadbandconnectivityis

extendedfromthe coreinfrastructureto endusers'

devicessuch asPCs,personaldigitalassistants

(PDAs),telephones,televisionsets,anddigitalcameras. Infrastructure gatewayequipmentprovides

broadbandaccessto thepacket-basedinfrastructure.

Customerpremisesequipment(CPE) access gateways

extendbroadbandaccess connectivityto end-userdevicesvia one ormore homenetworking

technologies.


22/33



23/33


Whatarethe Issues?

Bandwidth

The EffectofMultiple Users

Distance

Security

Integrationinto Existing NetworkInfrastructure

Availability

Cost


24/33


Benefits of Broadband

Whatcanbroadbanddo foryourbusiness?

Broadbandcanincreaseproductivitybyenabling thetransferof largedata filesdirectlyfrom local officesto

headoffices locatedin othercities, oreven othercountries.

Employees canaccessbettertraining opportunitiesusing broadbandbylogging onto corporateintranets

andthe Internetto train fornewproductofferings ortorefresh theirknowledge on currentproducts orservices.


25/33



Businesses can use high-capacityInternetto trackshipmentsandto seekoutotherexportmarkets,enabling themto competesuccessfullywith marketsoutsidetheprovince.

Newspapers, orgraphicdesign firms,thatwantto keeptheirbusinessinarural communitycan usebroadbandto sendandreceive largedata filesneededforproduction.

Broadbandallowsbusinessesto conductnet-meetingsorface-to-facemeetings using videoconferencing todiscuss urgentdecisions,minimizing travel costs forin-personmeetings.


26/33



Whatcanbroadbanddo foryourschool?

Broadbandconnectsmusicstudentsin Dar-es-salaam

to violin lessons with musiciansin Dodoma using live

videoconference.

Studentsinruralandremote communities caneasily

surftheWebto visitvirtualmuseums.


27/33



Broadbandallowsstudentsto developandpost

originalmusicandvideo forschoolprojects online.

High-capacityInternetallowsteachersto take

advantage ofmanyonlineresourcesandintegrate

theminto everydayclassroomactivities.


28/33



Whatcanbroadbanddo foryourmunicipal

government?

Broadbandenablesatechnology-basedcustomer

service centrethatallowsa one-stopshop fortownbusinesstransactions,including licensing,billings,

permitsandutilitiespayments.


29/33



Whatcanbroadbanddo foryourcommunity?

Broadbandcanincreasetourism opportunitiesby

enabling onlinemarketing resourcestopromote local

andhistoricalattractions. Italso allows foronlinereservationsystems.

High-capacityInternetbringsa largeraudienceand

buyersto localartisansandcraftspeople,allowing

themtopromoteandselltheirworkviathe Internet.


30/33



Ruralindigenous communities canaccumulateand

disseminatetheirculturalinformation withoutthe

connectivitylimitationstheynow face.

Broadbandcan helpensurethatfamilies,businesses

andyoungpeopleinruralandremoteareasarenot

forcedto leavein orderto findaneconomic orsocial

futureelsewhere.


31/33



Whatcanbroadbanddo foragriculture?

Commercial farming operations can usebroadbandto

networkandconnectbarns,enabling thetransferof

databetweenthem using wireless communication.

Custom cropspraying operations forgrainproducers

can usebroadbandto enablevoice communicationand

datatransferto andfrom operating unitsand

equipment.


32/33



Broadbandcan connectlivestockfarmers with workers

inthe fields, familyathomeandotheroperations using

a wireless communicationnetwork.

Informationaboutthe farming industry, growing

conditionsandanimal health ismoreeasilyaccessed

with high-capacityInternet.

Broadbandopens up opportunityto access largermarketsandexpandedmarketing channels.


33/33


Questions?

??

broadband evolution

Documents