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1、南京邮电大学全日制工程硕士研究生学位论文AbstractAbstractPretreatmentsystem,whichanalysestheoriginalbillingdataandextractsinformation,andthenconvertstocdrfileswithstandardformat.Itisanimportantpartinbillingsystem.AsiaInfo-LinkageCompany,asthesecondlargestBSS/OSSsupplieroftheworld,researchedthepretreatmentsys
2、temservesasbillingoperatorinmanydomesticCMCC.Pretreatmentsystemisinthefrontofthebillingsystem.Itprovidesprocesseddatafortheentirebillingsystem.Linkage’spretreatmentsystem,includingextractingacdr,extractingfields,formattingfields,convertingcdrs,validatingcdrs,andoutputstandardcdrs,canreal
3、izethevariousfunctionsofthesoftware.Withtheincreaseofmobilecustomersandvolumeofbusiness,Linkage’soriginalpretreatmentcan’tadaptprocessingtheoriginalcdrsefficiently.Therefore,itisveryurgentforsystemtoimprovethespeedofprocessingthecdrfiles.Thispaperdescribesthetheoryandmethodsofthesoftware
4、optimizationdetailedly,andcarriesoutsimplecodeoptimizationpractices.Thestudyworkofthispapermainlyincludesthefollowingtwoaspects:（1）Accordingtotestresults,thispaperexplainsaoptimizingprincipleoftheoverallsoftware,andanalysesthedefectsoftheoriginalpretreatmentsystemintheory.（2）Usingthefeat
5、uresofC++andimprovementofunderlyingfunction,includingthemethodsofreducingthenumberoffunctionparameters,functionsinlining,optimizingthedatastructures,avoidingcallingtheconstructorexcessively,improvingmktimefunctionandsoon,thengivesthefinalresultsofoptimization.Experimentalresultsshowthatt
6、hetimeofimprovedpretreatmentsystemprocessingcdrfilesshorterthantheoriginalmorethandoubledafteraseriesofoptimization.Atlast,itachievesthedesiredgoalsandeffect.Keywords：Billing,PretreatmentSystem,CdrFiles,OptimizationII南京邮电大学全日制工程硕士研究生学位论文目录目录第一章绪论..........................................
7、..............................................................................................11.1课题背景与研究意义...............................................................................................................11.2电信计费系统概述..........................................
