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1、:外文原文3GTECHNOLOGYAlthoughthetechnologybehind3Gmayseemcomplicated,thewaysinwhich3Gwillaffectallofourlivesareeasytoimagine.Justimaginehavingacombinedcamera,videocamera,computer,stereo,andradioincludedinyourmobilephone.Rich-mediainformationandentertainmentwillbeatyourfin
2、gertipswheneveryouwantanywherethereisawirelessnetwork.Mobilecommunicationismovingfromsimplevoicetorichmedia,whereweusemoreofoursensestointensifyourexperiences.Butnotallofthiswillhappenatonce.3Gisanevolutiontoacommunicationsidealthatnoonecompletelyunderstandsyet.Whatwe
3、doknowisthatmobilemultimediawillhittheJapanesemarketsin2001,andEuropeandNorthAmericawillfollowsoonafter.3Gbringstogetherhigh-speedradioaccessandIP-basedservicesintoone,powerfulenvironment.ThesteptowardsIPisvital.IPispacket-based,whichinsimpleterms,meansuserscanbeHonli
4、neHatalltimes,butwithouthavingtopayuntilweactuallysendorreceivedata.TheconnectionlessnatureofIPalsomakesaccessalotfaster:filedownloadscantakeafewsecondsandwecanbeconnectedtoourcorporatenetworkwithasingleclick.3Gintroduceswidebandradiocommunications,withaccessspeedsofu
5、pto2Mbit/s.Comparedwithtoday'smobilenetworks,3Gwillsignificantlyboostnetworkcapacity-sooperatorswillbeabletosupportmoreusers,aswellasoffermoresophisticatedservices.3G-Athome3Gisgoingtoaffectourhomeandsociallivesinmanyways.Theservicesthat3Genableswillhelpustomanageourp
6、ersonalinformation,simplifytaskssuchasgroceryshopping,makebetteruseofourtimeandofferservicesthatarejustfuntouse.Operatorswillbeabletodevelopmyriadnewserviceopportunitiestoattractandretainnewcustomers.Herearesomeexamples:•YouresittingonatrainandusethisHdeadMtimetologon
7、toyourbankaccount,checkyourbalanceandpayafewbills-allthroughyour3Gdevice.Yousavetimeandcanbesmarteraboutmanagingyourfinances.•Onatouringvacation,youarriveinanewcity.Youhaven'tmadeanyreservationsinadvance,becauseyoucandothiswhenyougetthere,byusingyour3Ghandsettoobtainu
8、p-to-dateinformation,includinghotelvacancies.Havingbookedaroom,youcanuseyourmobiletoviewvideoclipsoflocaltouristattractionsa
