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Lecture on the 5G WiFi (802.11ac) and its impact.
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The Impact of 5th Generation WiFi (802.11ac) Dr. Mazlan Abbas MIMOS Berhad mazlan.abbas@mimos.my @mazlan_abbas Dr. Mazlan Abbas
Wi-Fiacis inevitable...
Butquestionsremain What will drive adoption? Whatwillthe impactbe? Whatisac? Whencanwe expectit?
Wi-Fiacaquickprimer • NextgenerationWi-Fi,firstpartoftheacspecificationtoberatifiedin February2013 • SomechipsetvendorshavealreadymadeavailableWi-Fiacchipsetstotheir partners.Devicesalreadyonthemarket • IthasbeentoutedasGigabytewireless.Whilstpossible,atitsbaselevel1x1 onlyasfastas450Mbps. • BuildsonmanyofthechangesandinnovationsseeninWi-Fin
FourdriversfortheadoptionofWi-Fiac Increased internet usage Successof Wi-Fi integrationin SmartTV devices Wi-Fionly portable devices Currentand expected usage problems
FourdriversfortheadoptionofWi-Fiac Increased internet usage Successof Wi-Fi integrationin SmartTV devices Wi-Fionly portable devices Currentand expected usage problems
Popularityofonlinevideo Onlinevideousers(mil.) 2,500.0 2,124.9 1,919.2 2,000.0 1,500.0 1,722.8 1,539.1 1,365.7 1,195.3 1,000.0 500.0 0.0 201020112012201320142015 • Videoisexpectedtobethemaindriverofinternettrafficgrowth • Unlikewebbrowsing,email,softwaredownloadsvideoistimesensitive
PortabledevicesrelyheavilyonWi-Fi Tablets Smartphones Ultrabooks • UltrabooklaptopsoftenlackEthernetports • TabletsandsmartphonesusersrelyheavilyonhomeWi-Fiandhotspots • ThesedevicesarejustemergingsoWi-Finetworksareonlygoingtocomeunder morestrain
Thesmartphoneeffect Smartphonessales(mil.)2010-2016 1000 800 600 400 200 0 201020112012201320142015 • Wi-Fiacwillonlybeinsmartphonesattheearliestin2013 2016 • Withsuchalargemarketthatevenasmallpercentagewillbesubstantial • ShortlifecycleswillhaveapositiveimpactonWi-Fiacinstallrates
SmartTVdevicesontherise 450 400 350 300 250 200 150 100 50 - Global,in-homeconnecteddevicesalesforecasts 2010 2011 2012 2013 2014 2015 ConnectedTVs BD STB Console Mediastreamer • Perhapsnotallbutcertainlymanyofthesedeviceswillbeconnectingto theinternetoverWi-Fi.
StationarydevicesareoptingforWi-Fi • ThosethatSmartTVsandgamesconsolesthatuseWi-Fihavehigher connectionrates • SuggestingusersarenotonlyreluctanttouseEthernet,butarecomfortable withWi-Fi • HDVideoisakeyserviceandimprovingperformancewillbeessentialgoing forward.
Thecongestionproblem • The2.4Ghzspectrum, usedbyWi-Fib/g/nis alreadycongested. • Congestioncauses interferencewhichhas adetrimentleffecton users’Wi-Fiexperience • Lessimportantfor applicationswhichare nottimesensitive
Congestionisalreadyaproblem • Wi-Fiacattemptstosolvethiscongestionproblembyabandoningthe2.4Ghz spectrum. • Itusesthe5Ghzspectrumexclusively. • Atpresent5Ghzisfarlessbusy,somovingovertothisspectrumshould benefitendusers.
Thenegativeimpactofnewconnecteddevices Number of devices using WiFi (a/b/g/n) User experience
Edgingclosertothattippingpoint • AlmostatthepointwhereWi-Finisnolongerasolution,butaproblem • Somehouseholdscloserthanothers • Theaverageuserdoesnotunderstandthesituation • ExpectWi-Fitojustwork
Wi-Fiaccansolvethecongestionproblem… Wi-Fincanonlysendandreceivedatafromonedevice atatime. •Sendingburstsofdatatoeachinturn •Themoredevicestheslowerdatatransferisasittakestherouterlonger tocomebackroundtotheoriginaldevice Wi-Fiaccanthedemandsofmultipledevices simultaneouslyduetomultiuserMIMO(MU-MIMO) •Dataissentandrecievedfromeachdevice,whichreceivesthefull bandwidthonoffercontinuously. •Thisshouldspeedupdatatransferandimprovetheuserexperience. MU-MIMOisoneofthemajorinnovationsoftheWi-Fiac standard •Howeveritwillonlybefullyratifiedintheseconddraftwhichwillbe ratifiedafter2012
….Butexpect5Ghztobecomeclogged • SomeEuropeanoperatorsthathaveadoptedthe5Ghzspectrumfortheir IPTVservicesarealreadyreportingseeingcongestion • Inevitablythemoredevicesthatusethe5Ghzspectrumthegreaterthe chanceofinterferenceandcongestion. • Thechallengeofwhattodooncethisbecomesaproblemneedstobedealt withaheadoftime. • Dualbandsolutionsmaybeonesolution. • Theshortrangeadstandardcouldbeanother
Behaviourwilladapttonewthroughput Newtechnology: Increased Throughput Throughputdeficit Newapplications Temporarysurplus Increasedusageof oldapplications
Videowillbeaccessiblefromeverywhere • Potentcocktailof: • Moredevices,usedinmultiplerooms • Newlighterformfactorswillincreaseportability • Morereliableconnections • Greaterthroughput • Plethoraofservices
Conclusions Wi-Fiacisamajorstepforwardandcansupportmultiple devicesmuchbetterthann. •However,toavoidcongestiondownthelineuseofwirelinetechnologies shouldbedeployedwheretheycan. SmartphoneswilldriveadoptionofWi-Fiac •Theywillbenefitmostastheytendnottohaveroomformultipleantenna Insidethehomethemajorhindrancetotake-upofWi-Fi acwillbebroadbandoperators. •Theseoperatorsshouldseriouslyconsiderrollingoutthistechnologyasit shouldsignificantlyimpactsubscriberexperience.
References • “Examining the drivers for the adoption and potential impact of Wi-Fi ac”, Andrew Landbrooke, WiFi World Summit, Sept. 2012, Barcelona
Contact Dr. Mazlan Abbas @mazlan_abbas mazlan.abbas@mimos.my