通信运营与管理专业英语教程 教学课件 作者 李学军 unit 2.ppt

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1、VocationalEnglishforTelecomOperationandManagement浙江邮电职业技术学院李朝晖Unit2MobilephoneandapplicationRevisionofUnit1BriefintroductiontocommunicationSignificanceandroleoftelecomonthemicroeconomicscale&onthemacroeconomicscaleDevelopmentoftelephonesCharacteristicof

2、voicecommunicationUnit2Mobilephoneandapplications(I)MainmanufacturersofmobilephonesMobilephonepenetrationrateTechnicalstandardsofmobilephonesCultureandcustomsEtiquetteofmobilephoneuseMobilephoneusebydriversImportantvocabulary3G(thethirdgeneration)第三代通信

3、系统subscriber用户,订购者shortmessageservice(SMS)短消息服务signal-jamming信号干扰antenna天线cellulartelephony移动电话penetrationrate覆盖率pay-as-you-go预付费业务ImportantvocabularyGSM全球移动通信系统(globalsystemformobilecommunication)CDMA码分多址(Code-divisionMultipleAccess)W-CDMA宽带码分多址TDMA时分多

4、址(Time-divisionMultipleAccess)hand-heldtelephone手提电话hand-freetelephone免提电话Severalexamplesofnon-foldingmobilephones.Variouscellphonesfromthepast10–15years.1.NECCellstar500series(1992)2.Nokia2110series(1994)3.Nokia5120(1998)4.Kyocera2135(2002)5.Audio

5、voxCDM8300(2002)6.SamsungSCH-A650(2004)CategoriesofmobilephonesAccordingtoshape:flipphonebarphoneslidephoneAccordingtonetwork:GSM,CDMA，3GphonesandsoonAccordingtofeature:basicphonesmusicphonesbluetoothphonescameraphonessmartphonesGPSphonesBusinessphoneG

6、PSphoneSamsungFlipphonewithsatellitetvNokia’snewestproduct---N96AppleInc’siphoneBriefintroductiontomobilephoneAccordingtointernalmemos,AmericanTelephone&Telegraphdiscusseddevelopingawirelessphonein1915,butwereafraiddeploymentofthetechnologycouldinfluenc

7、eitswiredserviceintheU.SIn1945,the0Gofmobiletelephoneswasintroduced.In1973,Cooperinventedfirstpracticalhandheldmobilephone.In1978thefirstcommercialmobilephoneservicewaslaunchedinJapanbyNTT.Intheearly1980fullyautomaticcellularnetwork(1G)wereintroduced.In

8、2001thefirstcommerciallaunchof3GwasinJapanonW-CDMAstandard.In1991thefirst"modern"networktechnologyondigital2GcellulartechnologywaslaunchedinFinlandontheGSMstandard.ThefirsthandheldmobilephoneintheworldBriefintroductiontomobilepho