资源描述：
《毕业论文外文翻译-通用分组无线服务GPRS》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、大连科技学院2013届本科生毕业设计（论文）外文翻译大连交通大学信息工程学院毕业设计(论文)外文翻译学生姓名专业班级信息工程09-2班指导教师职称 所在单位电气工程系信息工程教研室教研室主任 完成日期2013年4月15日13大连科技学院2013届本科生毕业设计（论文）外文翻译GPRS1GPRSOverviewGPRSistheGeneralPacketRadioServiceEnglishabbreviations,forGeneralgroupingwirelessbusinessinChinese,isakindofwirelessPacketswitchingtechnologyb
2、asedonGSMsystem,providesend-to-end,wide-areawirelessIPconnection.RelativelyoriginalGSMdial-upwaywayofcircuit-switcheddatatransmission,GPRSispacketswitchingtechnology,hasa"real-timeonline","volumepricing"and"quicklogin","highspeedtransmission"and"freelyswitch".Informally,GPRSisahigh-speeddataproce
3、ssingtechnology,themethodisintheformof"group"senddatatotheuser'shands.AlthoughGPRSastheexistingGSMnetworktomakethetransitiontothethirdgenerationmobilecommunicationtechnology,butithasasignificantadvantageinmanyways.Duetotheuseofthe"group"technology,Internetusersrelativestability,toavoidtheunnecess
4、aryshort-termbringtrouble.Inaddition,theuseofGPRSInternetmethodisdifferentfromaWAP,withWAPwebsitelikeonlineathome,"dial-up"first,andontheInternetandcan'tusethephonelineatthesametime,theGPRSdownloadmaterialsandcansimultaneously.Technically,thetransmissionofsound(voice)continuetousetheGSM,andcanuse
5、theGPRSdatatransmission,inthisway,themobilephoneapplicationtopromotetoahigherlevel.DevelopmentofGPRStechnologyis"economy",becauseonlyneedtousetheexistingGSMnetwork.GPRSusageisveryextensive,includingthroughthemobilephonetosendandreceiveE-mail,browsingontheInternet,etc.GPRSandpastcontinuousinthecha
6、nneltransmissionindifferentways,totransmitthePacket(Packet)tense,sotheburdenofcostcalculationisbasedonthetransmissiondataunit,nottouseitsentirechannels,theoreticallycheaper.GPRStransmissionratecanbeupto56or114KBPS.2AnessentialpartoftheGPRS(1)Packetcontrolunit(PCU):mainlyusedforthecompletionofRLC/
7、MACfunctionwiththeGbinterfaceandtransformation.PCUinphysicalimplementationcanhavethreeways:PCUSettingsintheBTS;PCUissetintheBTS;PCUindependentsetting,Aphysicalentity(containmultiplePCUunit)likelyconnectedtomultipleBSC,
