《通信专业英语》大作业
姓名:罗强
学号:2
序号:01号
系别:中兴通信工程学院
班级:12级通信六班
完成时间:2014、12、26
翻译4GMobile:
4GMobile
Voicewasthedriverforsecond-generationmobileandhasbeenaconsiderablesuccess、Today,videoandTVservicesaredrivingforwardthirdgeneration(3G)deployment、Andinthefuture,lowcost,highspeedwilldriveforwardthefourthgeneration(4G)asshort-rangemunicationemerges、Serviceandaplicationubiquity,withahighdegreepersonalizationandsynchronizationbetweenvarioususerappliances,willbeanotherdriver、Atthesametime,itisprobablethattheradioaccessnetworkwillevolvefromacentralizedarchitecturetoadistributedone、
声音就就是第二代移动驱动,并得到了相当大得成功。今天,视频和TV服务正在向第三代(3G)发展。并且在以后,低成本和高速得特点将带动她们进入第四代(4G)即短距离通信,随着服务和折叠技术得普及,各种用户设备之间得个性化和同步化程度越高,将成为另一个驱动器。在同一时间,该无线电接入网络有可能将来自集中式架构演进到一个分布式之一。
1、ServiceEvolution
Theevolutionfrom3Gto4Gwillbedrivenbyservicesthatofferbetterquality(e、g、,videoandsound)thankstogreaterbandwidth,moresophisticationintheassociationofalargequantityofinformation,andimprovedpersonalization、Convergencewithothernetwork(enterprise,fixed)serviceswilleaboutthroughthehighsessiondatarate、Itwillrequireanalways-onconnectionandarevenuemodelbasedonafixedmonthlyfee、Theimpactonnetworkcapacityisexpectedtobesignificant、Machine-to-machinetransmissionwillinvolvetwobasicequipmenttypes:sensor(whichmeasureparameters)andtags(whicharegenerallyread/writeequipment)、
Itisexpectedthatuserswillrequirehighdatarates,similartothoseonfixednetworks,fordataandstreamingapplications、
Mobileterminalusage(laptops,personaldigitalassistants,handhelds)isexpectedtogrowrapidlyastheybeemoreuserfriendly、Fluidhighqualityvideoandnetworkreactivityareimportantuserrequirements、Keyinfrastructuredesignrequirementsinclude:fastresponse,h