通信革命5G英文演讲讲义.docx

通信革命5G英文演讲讲义.docx

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通信革命5G英文演讲讲义

通信革命5G英文演讲讲义

LT

UniversityofBristolZhangZhaoHan

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Goodmorning,ladiesandgentleman.Mypresentationtitleis“howcould5Gchangepeople’slife?

”.Iwaswondering,didyouwanttotouchyourphonetocheckwhethertherewasanincomingcallwhenyouheardtheringtone.Ifyoudid,itmeansthemobilephoneistheveryimportantthinginyourlife.Andthewaypeoplecommunicatewitheachotherhasbeenchangeddramatically.

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Einsteinsaidthat"Ineverthinkaboutthefuture—itcomessoonenough.“Andhewasright.So,I'mheretoaskyoutothinkof howthefutureishappeningnow.

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Overthepast200years,theworldhasexperiencedtwomajorwavesofinnovation.First,theIndustrialRevolutionbroughtusmachinesandfactories,railways,electricity,airtravel,andourliveshaveneverbeenthesame.

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Thenthecommunicationrevolutionbroughtuscomputingpower,datanetworks,accesstoinformationandcommunication,andourliveshaveneverbeenthesame.

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Intherecentyears,duetotheincreasinguserdemand,wirelesscommunicationnetworkshasbeendevelopingconstantly.From2Gto3G,thetechnicalrevolutionhasmadebigchangestopeople’slifeandwork.Andrightnow,4Gnetworksinmostcountrieshavealreadyadoptedinthebusiness.

Fortunately,accordingtotheexistingtechnology,thehighestwirelessspeedhasalreadyreached150Mbps（megabitpersecond）.ItmeansthevideosonYouTubecanbewatchedsmoothly.Averagespeedsisfasterthanmostpeople'shomebroadband.Asaresult,thereisanargumentthatitisnoneedtoupgradecurrentcommunicationsystem,becauseexistingnetworkshavealreadybeenabletomeetthedailyneeds;andtheresearchanddevelopmentexpensesfor5Gwillincreasetheconsumers’burden.

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However,ifwecomparethewirelessspeedtotheheightinreallife.From2Gto5G,youcanseethemhere.2Gislikeagrasshopper,3Gislikeabordercollie,andeven4Gisjustlikea5-storybuilding.Asthe5-srorybuildingcannotmeetourdemandinreallife,4Gwillnotmeetourcommunicationdemandinnestfewyears.Weneedkhalifatower,the5G.

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Ofcause,5Gcanmeetourdemand.Becauseitcanprovidethehighspeedwithlowlatency.therateof10-100Gigabitpersecond,itis4G’s100-1000times.Andwithitsultralowlatency,only2to5millisecond,itcanprovidetheexcellentuserexperience.

Second,Internationaltelecomorganizationpointsoutthatthenumberofconnecteddeviceswillreach50billionby2020.Atthattime,eachpersonmayhavethesmartglasses,thesmartphone,theiPad,thelaptop,andthesmartwatch.Alloftheseneedtotheinternet.Withthelimitedbandwidthresource,currentnetworkscannotaccommodatesomanyintelligentterminals.Andthisisalsoabigchallengefor5G.

Lastbutnotleast,5Ghastheabilitytointegrateexistingsystemsseamlessly,includingWi-Fi（WirelessFidelity）,LTEandHSPA（HighSpeedPacketAccess）.Inthiswayitcanmaximizetheuseofexistingresourcesandincreaseredundancyinsurance.

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Next,wemoveontowhat5Gcoulddo,inanotherword,how5Gcouldchangeourlives.Thankstothelowlatencyandhugecapacity,5Gwouldallow,forexample,real-timeshortmessagestobesenttocitizens’smartphonesimmediatelywhentheearthquakeorothernaturaldisastersaredetected.Citizenscanusethesesecondstoturnoffallopenflamestopreventfiredisaster,andtoopenanexit（doorsorwindows）incaseofdeformationcausedbyearthquakes.

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Anditcanalsobeusedtothehighspeedrailwayemergencysystem.Withthelowlatency‘shelp,thetraincanbrakeafter2millisecondwhentheearthquakewasdetected.

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Moreover,theinternetofthingsisanotherbenefitfrom5G.The5G’sgoaliseverythingcouldconnecttotheinternet.Thistechnologycouldhelptheairports.

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Today,10percentofallflights cancellationsanddelays arecausedbyunscheduledmaintenanceevents. Somethinggoeswrongunexpectedly. Thisresultsinsixbillionpoundsincosts fortheairlineindustrygloballyeveryyear.

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nottomentiontheimpactonallofus:

 stress,inconvenience, missedmeetingsaswesithelplessly inanairportterminal. 

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Sohowcantheinternetofthingshelphere?

 5Gcandevelopapreventivemaintenancesystem whichcanbeinstalledonanyaircraft. It'sself-learningandabletopredictissues thatahumanoperatorwouldmiss. Theaircraft,whileinflight, willcommunicatewithtechniciansontheground. Bythetimeitlands,theywillalreadyknow ifanythingneedstobeserviced. Asystemlikethiscanprevent over60thousanddelaysandcancellationseveryyearinEurope, helpingsevenmillionpassengers gettotheirdestinationsontime.

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However,the5G,theinternetofthings,cannotonlybenefitthebigcompany,butalsothecommonperson.AprofessorofMIT,bringthesensorstohishouse.Thesensorsconnectedtointernetcanfeelpeoplearoundthem,andthenopentherecorderandcameratorecordhisson’slife.Hisson,afterthefirstbirthday, wouldsay"gaga"tomeanwater. Andoverthenexthalf-year, heslowlylearnedtherightpronunciationof"water." Sowe'regoingtolookthroughhalfayear inabout40seconds. Novideohere, soyoucanfocusonthesound,anewkindofjourney:

 gagatowater.Finally,hesucceed,didn’the?

Thesensorscanrecordeverytimeofus,sowecanlookbacktofindourhappiness.Ordootherusefulthings.

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ThelastpointIwanttopresentiscloudcomputing.5G’sdownloadspeedismuchfasterthancurrentharddisks'speed.Whichmeanstraditionalstoragedevicesmaylosetheirstatusin5Gtimeandwouldbereplacedbythe“Cloud”.

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Sothatismypresentation.Hereistheq&atime,Iwouldveryappreciatetoansweryourquestions.